Adjustable Office Chairs

Page 8 of 22
337 - 384 of 1,041 Results

Price range

USD
USD

Filter by brand

  • 298
  • 214
  • 120
  • 103
  • 64
  • 64
  • 55
  • 38
  • 11
  • 11
  • 11
  • 10
  • 9
  • 9
  • 5
  • 5
  • 5
  • 4
  • 2
  • 1
  • 1
  • 1

Filter by colour

  • 308
  • 113
  • 109
  • 82
  • 74
  • 44
  • 42
  • 41
  • 38
  • 37
  • 23
  • 20
  • 18
  • 14
  • 8
  • 8
  • 5
  • 5
  • 4
  • 4
  • 3
  • 3
  • 3
  • 2
  • 2
  • 2
  • 2
  • 2
  • 2
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1

Filter by merchant

  • 964
  • 74
  • 2
  • 1
View Blue Fabric Heavy Duty Office Chair Independent Seat Backrest Adjustment Seat Slide Adjustable Arms Posture Logic information

Blue Fabric Heavy Duty Office Chair Independent Seat Backrest Adjustment Seat Slide Adjustable Arms Posture Logic

£310.75 Est. $414.71
View Blue Fabric Heavy Duty Office Chair Independent Seat Backrest Adjustment Seat Slide Adjustable Arms Posture Logic at ChairOffice
View Affordable Vinyl Operator Chair Yellow Adjustable Arms information

Affordable Vinyl Operator Chair Yellow Adjustable Arms

£158.28 Est. $211.23
View Affordable Vinyl Operator Chair Yellow Adjustable Arms at ChairOffice
View Ergo Fix Posture Grey Fabric Office Chair 24Hours Use Ratchet Height Adjustable Back Inflatable Lumbar Adjustable Headrest 178kg Capacity information

Ergo Fix Posture Grey Fabric Office Chair 24Hours Use Ratchet Height Adjustable Back Inflatable Lumbar Adjustable Headrest 178kg Capacity

£358.22 Est. $478.06
View Ergo Fix Posture Grey Fabric Office Chair 24Hours Use Ratchet Height Adjustable Back Inflatable Lumbar Adjustable Headrest 178kg Capacity at ChairOffice
View Black Fabric Heavy Duty Office Chair Independent Seat Backrest Adjustment Seat Slide Adjustable Arms Posture Logic information

Black Fabric Heavy Duty Office Chair Independent Seat Backrest Adjustment Seat Slide Adjustable Arms Posture Logic

£310.75 Est. $414.71
View Black Fabric Heavy Duty Office Chair Independent Seat Backrest Adjustment Seat Slide Adjustable Arms Posture Logic at ChairOffice
View Olympia Operator Chair Breathable Black Mesh Back Deeply Padded Orange Fabric Seat Adjustable FlipUp Arms Height Recline Adjustable information

Olympia Operator Chair Breathable Black Mesh Back Deeply Padded Orange Fabric Seat Adjustable FlipUp Arms Height Recline Adjustable

£217.02 Est. $289.62
View Olympia Operator Chair Breathable Black Mesh Back Deeply Padded Orange Fabric Seat Adjustable FlipUp Arms Height Recline Adjustable at ChairOffice
View Cobhamly BlackOrange 24Hour High Back Mesh Office Chair Adjustable Headrest Lumbar Support Deeply Padded Fabric Seat Adjustable Armrests information

Cobhamly BlackOrange 24Hour High Back Mesh Office Chair Adjustable Headrest Lumbar Support Deeply Padded Fabric Seat Adjustable Armrests

£194.96 Est. $260.18
View Cobhamly BlackOrange 24Hour High Back Mesh Office Chair Adjustable Headrest Lumbar Support Deeply Padded Fabric Seat Adjustable Armrests at ChairOffice
View Babylon Blue Fabric Bariatric High Back 24Hour Heavy Usage Operator Chair Height Adjustable Backrest Seat Slide Seat Height Adjustment information

Babylon Blue Fabric Bariatric High Back 24Hour Heavy Usage Operator Chair Height Adjustable Backrest Seat Slide Seat Height Adjustment

£213.83 Est. $285.36
View Babylon Blue Fabric Bariatric High Back 24Hour Heavy Usage Operator Chair Height Adjustable Backrest Seat Slide Seat Height Adjustment at ChairOffice
View Babylon Black Fabric Bariatric High Back 24Hour Heavy Usage Operator Chair Height Adjustable Backrest Seat Slide Seat Height Adjustment information

Babylon Black Fabric Bariatric High Back 24Hour Heavy Usage Operator Chair Height Adjustable Backrest Seat Slide Seat Height Adjustment

£213.83 Est. $285.36
View Babylon Black Fabric Bariatric High Back 24Hour Heavy Usage Operator Chair Height Adjustable Backrest Seat Slide Seat Height Adjustment at ChairOffice
View Green Ergonomic Fabric Office Chair Independent Back Seat Adjustment 5 Year Guarantee Body Weight Mechanism Positive Posture information

Green Ergonomic Fabric Office Chair Independent Back Seat Adjustment 5 Year Guarantee Body Weight Mechanism Positive Posture

£372.06 Est. $496.53
View Green Ergonomic Fabric Office Chair Independent Back Seat Adjustment 5 Year Guarantee Body Weight Mechanism Positive Posture at ChairOffice
View Brown Vegan Leather Ergo Sync Tall High Back Office Chair Tested To 28 Stones Height Adjustable Reclining Backrest 5Year Guarantee Ergo Sync information

Brown Vegan Leather Ergo Sync Tall High Back Office Chair Tested To 28 Stones Height Adjustable Reclining Backrest 5Year Guarantee Ergo Sync

£286.24 Est. $382.00
View Brown Vegan Leather Ergo Sync Tall High Back Office Chair Tested To 28 Stones Height Adjustable Reclining Backrest 5Year Guarantee Ergo Sync at ChairOffice
View Black Fabric Office Operator Task Chair information

Black Fabric Office Operator Task Chair

£124.44 Est. $166.07
View Black Fabric Office Operator Task Chair at ChairOffice
View Ergo Fix Posture Aqua Blue Fabric Office Chair 24Hours Use Ratchet Height Adjustable Back Inflatable Lumbar Adjustable Headrest 178kg Capac information

Ergo Fix Posture Aqua Blue Fabric Office Chair 24Hours Use Ratchet Height Adjustable Back Inflatable Lumbar Adjustable Headrest 178kg Capac

£358.22 Est. $478.06
View Ergo Fix Posture Aqua Blue Fabric Office Chair 24Hours Use Ratchet Height Adjustable Back Inflatable Lumbar Adjustable Headrest 178kg Capac at ChairOffice
View Heavy Duty Black Mesh Office Chair Ergonomic Seat Slide Height depth Adjustable Lumbar Support Headrest Stealth information

Heavy Duty Black Mesh Office Chair Ergonomic Seat Slide Height depth Adjustable Lumbar Support Headrest Stealth

£453.22 Est. $604.84
View Heavy Duty Black Mesh Office Chair Ergonomic Seat Slide Height depth Adjustable Lumbar Support Headrest Stealth at ChairOffice
View Cream Ergonomic Fabric Office Chair Independent Back Seat Adjustment 5 Year Guarantee Body Weight Mechanism Positive Posture information

Cream Ergonomic Fabric Office Chair Independent Back Seat Adjustment 5 Year Guarantee Body Weight Mechanism Positive Posture

£372.06 Est. $496.53
View Cream Ergonomic Fabric Office Chair Independent Back Seat Adjustment 5 Year Guarantee Body Weight Mechanism Positive Posture at ChairOffice
View Affordable Vinyl Operator Chair Citrus Adjustable Arms information

Affordable Vinyl Operator Chair Citrus Adjustable Arms

£158.28 Est. $211.23
View Affordable Vinyl Operator Chair Citrus Adjustable Arms at ChairOffice
View Black Neon Ergonomic High Back Executive Mesh Office Chair Height Adjustable Backrest With Lumber Support Seat Depth Slide Adjustable Arms information

Black Neon Ergonomic High Back Executive Mesh Office Chair Height Adjustable Backrest With Lumber Support Seat Depth Slide Adjustable Arms

£308.50 Est. $411.70
View Black Neon Ergonomic High Back Executive Mesh Office Chair Height Adjustable Backrest With Lumber Support Seat Depth Slide Adjustable Arms at ChairOffice
View Bariatric Mesh Heavy Duty Bariatric Office Chair Black Deeply Padded Seat Tested To 32 Stone Backrest Recline Seat Height Adjusts Regent information

Bariatric Mesh Heavy Duty Bariatric Office Chair Black Deeply Padded Seat Tested To 32 Stone Backrest Recline Seat Height Adjusts Regent

£344.94 Est. $460.33
View Bariatric Mesh Heavy Duty Bariatric Office Chair Black Deeply Padded Seat Tested To 32 Stone Backrest Recline Seat Height Adjusts Regent at ChairOffice
View Avanti Modern Green Leather Medium Back Office Chair Single Lever Height Back Recline Adjustment Chrome Arms Base Designer Style Office Cha information

Avanti Modern Green Leather Medium Back Office Chair Single Lever Height Back Recline Adjustment Chrome Arms Base Designer Style Office Cha

£170.64 Est. $227.73
View Avanti Modern Green Leather Medium Back Office Chair Single Lever Height Back Recline Adjustment Chrome Arms Base Designer Style Office Cha at ChairOffice
View Ergo Lumbar Support Black Medium Back Office Chair 24Hours Use Height Adjustable Back Inflatable Lumbar Support Adjustable Arms 178kg Weigh information

Ergo Lumbar Support Black Medium Back Office Chair 24Hours Use Height Adjustable Back Inflatable Lumbar Support Adjustable Arms 178kg Weigh

£212.63 Est. $283.76
View Ergo Lumbar Support Black Medium Back Office Chair 24Hours Use Height Adjustable Back Inflatable Lumbar Support Adjustable Arms 178kg Weigh at ChairOffice
View Nino Executive Cream Faux Leather Office Chair High Backrest Deeply Padded Seat Armrests Height Recline Adjustable 120kg Weight Capacity information

Nino Executive Cream Faux Leather Office Chair High Backrest Deeply Padded Seat Armrests Height Recline Adjustable 120kg Weight Capacity

£115.19 Est. $153.73
View Nino Executive Cream Faux Leather Office Chair High Backrest Deeply Padded Seat Armrests Height Recline Adjustable 120kg Weight Capacity at ChairOffice
View Vantage Chilli Fabric Upholstered Draughtsman Operator Chair Height Adjustable Back Adjustable T Arm Seat Slide 3Year Guarantee information

Vantage Chilli Fabric Upholstered Draughtsman Operator Chair Height Adjustable Back Adjustable T Arm Seat Slide 3Year Guarantee

£208.06 Est. $277.66
View Vantage Chilli Fabric Upholstered Draughtsman Operator Chair Height Adjustable Back Adjustable T Arm Seat Slide 3Year Guarantee at ChairOffice
View Zeus Executive Black Mesh Office Chair Red Seat information

Zeus Executive Black Mesh Office Chair Red Seat

£185.16 Est. $247.10
View Zeus Executive Black Mesh Office Chair Red Seat at ChairOffice
View Paris Yellow Ergonomic Office Chair Height Adjustable Mesh Back Padded Fabric Seat Adjustable Arms 178kg Weight Rating 5Year Guarantee information

Paris Yellow Ergonomic Office Chair Height Adjustable Mesh Back Padded Fabric Seat Adjustable Arms 178kg Weight Rating 5Year Guarantee

£232.04 Est. $309.67
View Paris Yellow Ergonomic Office Chair Height Adjustable Mesh Back Padded Fabric Seat Adjustable Arms 178kg Weight Rating 5Year Guarantee at ChairOffice
View Olympia Operator Chair Breathable Black Mesh Back Deeply Padded Chilli Fabric Seat Adjustable FlipUp Arms Height Recline Adjustable information

Olympia Operator Chair Breathable Black Mesh Back Deeply Padded Chilli Fabric Seat Adjustable FlipUp Arms Height Recline Adjustable

£217.02 Est. $289.62
View Olympia Operator Chair Breathable Black Mesh Back Deeply Padded Chilli Fabric Seat Adjustable FlipUp Arms Height Recline Adjustable at ChairOffice
View Red Heavy Duty High Back Deeply Padded Operator Chair Seat Slide Height Adjustable Back Adjustable Arms Posture Comfort information

Red Heavy Duty High Back Deeply Padded Operator Chair Seat Slide Height Adjustable Back Adjustable Arms Posture Comfort

£287.99 Est. $384.33
View Red Heavy Duty High Back Deeply Padded Operator Chair Seat Slide Height Adjustable Back Adjustable Arms Posture Comfort at ChairOffice
View Ergo Sit Light Blue High Back Office Chair 24Hours Use Height Adjustable Back Inflatable Lumbar Support Adjustable Headrest 178kg Capacity information

Ergo Sit Light Blue High Back Office Chair 24Hours Use Height Adjustable Back Inflatable Lumbar Support Adjustable Headrest 178kg Capacity

£297.71 Est. $397.30
View Ergo Sit Light Blue High Back Office Chair 24Hours Use Height Adjustable Back Inflatable Lumbar Support Adjustable Headrest 178kg Capacity at ChairOffice
View Ergo Flex Cream Fabric 24Hour Office Chair Height Adjustable Medium Back Inflatable Lumbar Knee Tilt 178kg Capacity 5Year Guarantee information

Ergo Flex Cream Fabric 24Hour Office Chair Height Adjustable Medium Back Inflatable Lumbar Knee Tilt 178kg Capacity 5Year Guarantee

£258.36 Est. $344.79
View Ergo Flex Cream Fabric 24Hour Office Chair Height Adjustable Medium Back Inflatable Lumbar Knee Tilt 178kg Capacity 5Year Guarantee at ChairOffice
View Ergo Flex Blue Fabric 24Hour Office Chair Height Adjustable Medium Back Inflatable Lumbar Knee Tilt 178kg Capacity 5Year Guarantee information

Ergo Flex Blue Fabric 24Hour Office Chair Height Adjustable Medium Back Inflatable Lumbar Knee Tilt 178kg Capacity 5Year Guarantee

£236.84 Est. $316.07
View Ergo Flex Blue Fabric 24Hour Office Chair Height Adjustable Medium Back Inflatable Lumbar Knee Tilt 178kg Capacity 5Year Guarantee at ChairOffice
View Green Vantage Fabric Draughter Chair With Adjustable Foot Stand Seat Back Height Adjustment Backrest Recline Loop T Adjustable Arms information

Green Vantage Fabric Draughter Chair With Adjustable Foot Stand Seat Back Height Adjustment Backrest Recline Loop T Adjustable Arms

£180.18 Est. $240.46
View Green Vantage Fabric Draughter Chair With Adjustable Foot Stand Seat Back Height Adjustment Backrest Recline Loop T Adjustable Arms at ChairOffice
View Black High Back PU Managers Executive Office Chair Heavy Duty Loop Padded Armrests Reclining Backrest Seat Height Adjust Contrast Stitching information

Black High Back PU Managers Executive Office Chair Heavy Duty Loop Padded Armrests Reclining Backrest Seat Height Adjust Contrast Stitching

£167.50 Est. $223.53
View Black High Back PU Managers Executive Office Chair Heavy Duty Loop Padded Armrests Reclining Backrest Seat Height Adjust Contrast Stitching at ChairOffice
View Ergo Fix Ergonomic High Back Mesh Office Chair Yellow Upholstered Seat Seat Depth Adjustment Height Adjustable Seat Backrest Adjustable Arms information

Ergo Fix Ergonomic High Back Mesh Office Chair Yellow Upholstered Seat Seat Depth Adjustment Height Adjustable Seat Backrest Adjustable Arms

£280.43 Est. $374.24
View Ergo Fix Ergonomic High Back Mesh Office Chair Yellow Upholstered Seat Seat Depth Adjustment Height Adjustable Seat Backrest Adjustable Arms at ChairOffice
View Zara Black Ergonomic Mesh Home Office Chair FlipUp Padded Armrests Breathable Mesh Backrest Adjustable Lumbar Support Deeply Padded Seat information

Zara Black Ergonomic Mesh Home Office Chair FlipUp Padded Armrests Breathable Mesh Backrest Adjustable Lumbar Support Deeply Padded Seat

£79.99 Est. $106.75
View Zara Black Ergonomic Mesh Home Office Chair FlipUp Padded Armrests Breathable Mesh Backrest Adjustable Lumbar Support Deeply Padded Seat at ChairOffice
View Saturn Orange Fabric 24Hour Ergonomic Office Chair Ratchet Height Adjustable Backrest Deeply Padded Seat Adjustable Headrest Adjustable Arms information

Saturn Orange Fabric 24Hour Ergonomic Office Chair Ratchet Height Adjustable Backrest Deeply Padded Seat Adjustable Headrest Adjustable Arms

£291.34 Est. $388.80
View Saturn Orange Fabric 24Hour Ergonomic Office Chair Ratchet Height Adjustable Backrest Deeply Padded Seat Adjustable Headrest Adjustable Arms at ChairOffice
View Blue Fabric Ergonomic Heavy Duty Bariatric Office Chair Height Adjustable Backrest Fully Reclining Deep Padded Seat 5Year Guarantee Mode information

Blue Fabric Ergonomic Heavy Duty Bariatric Office Chair Height Adjustable Backrest Fully Reclining Deep Padded Seat 5Year Guarantee Mode

£176.60 Est. $235.68
View Blue Fabric Ergonomic Heavy Duty Bariatric Office Chair Height Adjustable Backrest Fully Reclining Deep Padded Seat 5Year Guarantee Mode at ChairOffice
View Purple Vegan Leather Ergo Sync Tall High Back Office Chair Tested To 28 Stones Height Adjustable Reclining Backrest 5Year Guarantee Ergo Sync information

Purple Vegan Leather Ergo Sync Tall High Back Office Chair Tested To 28 Stones Height Adjustable Reclining Backrest 5Year Guarantee Ergo Sync

£286.24 Est. $382.00
View Purple Vegan Leather Ergo Sync Tall High Back Office Chair Tested To 28 Stones Height Adjustable Reclining Backrest 5Year Guarantee Ergo Sync at ChairOffice
View Brown Modern Leather Executive Home Office Chair Tilting Backrest Seat Height Adjustment Bright Chrome Arms Modern Computer Chair For Student  information

Brown Modern Leather Executive Home Office Chair Tilting Backrest Seat Height Adjustment Bright Chrome Arms Modern Computer Chair For Student

£179.18 Est. $239.12
View Brown Modern Leather Executive Home Office Chair Tilting Backrest Seat Height Adjustment Bright Chrome Arms Modern Computer Chair For Student at ChairOffice
View Orange Ergonomic Office Chair Adjustable Lumbar Support Seat Back Height Adjustment Call Centre Chair T Adjustable Arms Seat Tilt information

Orange Ergonomic Office Chair Adjustable Lumbar Support Seat Back Height Adjustment Call Centre Chair T Adjustable Arms Seat Tilt

£225.84 Est. $301.39
View Orange Ergonomic Office Chair Adjustable Lumbar Support Seat Back Height Adjustment Call Centre Chair T Adjustable Arms Seat Tilt at ChairOffice
View Yellow Neon Ergonomic High Back Executive Mesh Office Chair Height Adjustable Backrest With Lumber Support Seat Depth Slide Adjustable Arms information

Yellow Neon Ergonomic High Back Executive Mesh Office Chair Height Adjustable Backrest With Lumber Support Seat Depth Slide Adjustable Arms

£308.50 Est. $411.70
View Yellow Neon Ergonomic High Back Executive Mesh Office Chair Height Adjustable Backrest With Lumber Support Seat Depth Slide Adjustable Arms at ChairOffice
View Red Ergonomic Office Chair Adjustable Lumbar Support Seat Back Height Adjustment Call Centre Chair T Adjustable Arms Seat Tilt Function information

Red Ergonomic Office Chair Adjustable Lumbar Support Seat Back Height Adjustment Call Centre Chair T Adjustable Arms Seat Tilt Function

£225.84 Est. $301.39
View Red Ergonomic Office Chair Adjustable Lumbar Support Seat Back Height Adjustment Call Centre Chair T Adjustable Arms Seat Tilt Function at ChairOffice
View Blue Ergonomic Mesh Back Office Computer Task Operator Chair Loop Arms Height Adjustable Seat Reclining Breathable Backrest Spiral information

Blue Ergonomic Mesh Back Office Computer Task Operator Chair Loop Arms Height Adjustable Seat Reclining Breathable Backrest Spiral

£103.38 Est. $137.96
View Blue Ergonomic Mesh Back Office Computer Task Operator Chair Loop Arms Height Adjustable Seat Reclining Breathable Backrest Spiral at ChairOffice
View Olympia Operator Chair Breathable Silver Mesh Back Deeply Padded Yellow Fabric Seat Adjustable FlipUp Arms Height Recline Adjustable information

Olympia Operator Chair Breathable Silver Mesh Back Deeply Padded Yellow Fabric Seat Adjustable FlipUp Arms Height Recline Adjustable

£217.02 Est. $289.62
View Olympia Operator Chair Breathable Silver Mesh Back Deeply Padded Yellow Fabric Seat Adjustable FlipUp Arms Height Recline Adjustable at ChairOffice
View Blue Cobham High Back Luxury Mesh Office Chair With Headrest Adjustable Arms information

Blue Cobham High Back Luxury Mesh Office Chair With Headrest Adjustable Arms

£254.14 Est. $339.16
View Blue Cobham High Back Luxury Mesh Office Chair With Headrest Adjustable Arms at ChairOffice
View Blue Ergonomic Contract Fabric 24Hour Usage Office Chair Suitable For Larger User Height Adjustable Backrest Arms Seat Slide Endurance information

Blue Ergonomic Contract Fabric 24Hour Usage Office Chair Suitable For Larger User Height Adjustable Backrest Arms Seat Slide Endurance

£222.49 Est. $296.92
View Blue Ergonomic Contract Fabric 24Hour Usage Office Chair Suitable For Larger User Height Adjustable Backrest Arms Seat Slide Endurance at ChairOffice
View Chesterfield Brown Leather Executive Office Chair Traditional Buttoned Backrest Curved Padded Arms Reclining Seat Height Adjustment information

Chesterfield Brown Leather Executive Office Chair Traditional Buttoned Backrest Curved Padded Arms Reclining Seat Height Adjustment

£225.97 Est. $301.57
View Chesterfield Brown Leather Executive Office Chair Traditional Buttoned Backrest Curved Padded Arms Reclining Seat Height Adjustment at ChairOffice
View Atlanta Teal Ergonomic Mesh Home Office Chair FlipUp Folding Arms Deeply Padded Seat Breathable Mesh Backrest Height Adjustable Lumbar information

Atlanta Teal Ergonomic Mesh Home Office Chair FlipUp Folding Arms Deeply Padded Seat Breathable Mesh Backrest Height Adjustable Lumbar

£152.18 Est. $203.09
View Atlanta Teal Ergonomic Mesh Home Office Chair FlipUp Folding Arms Deeply Padded Seat Breathable Mesh Backrest Height Adjustable Lumbar at ChairOffice
View Blue Vegan Leather Ergo Sync Tall High Back Office Chair Tested To 28 Stones Height Adjustable Reclining Backrest 5Year Guarantee Ergo Sync information

Blue Vegan Leather Ergo Sync Tall High Back Office Chair Tested To 28 Stones Height Adjustable Reclining Backrest 5Year Guarantee Ergo Sync

£286.24 Est. $382.00
View Blue Vegan Leather Ergo Sync Tall High Back Office Chair Tested To 28 Stones Height Adjustable Reclining Backrest 5Year Guarantee Ergo Sync at ChairOffice
View Ergo Twist High Back Mesh Fabric Finish MultiFunctional Synchronised Tilt Mechanism Adjustable Lumbar Support Seat Slide Ratchet Adjustable information

Ergo Twist High Back Mesh Fabric Finish MultiFunctional Synchronised Tilt Mechanism Adjustable Lumbar Support Seat Slide Ratchet Adjustable

£296.66 Est. $395.90
View Ergo Twist High Back Mesh Fabric Finish MultiFunctional Synchronised Tilt Mechanism Adjustable Lumbar Support Seat Slide Ratchet Adjustable at ChairOffice
View Grey Ergonomic Fabric Office Chair Independent Back Seat Adjustment 5 Year Guarantee Body Weight Mechanism Positive Posture information

Grey Ergonomic Fabric Office Chair Independent Back Seat Adjustment 5 Year Guarantee Body Weight Mechanism Positive Posture

£372.06 Est. $496.53
View Grey Ergonomic Fabric Office Chair Independent Back Seat Adjustment 5 Year Guarantee Body Weight Mechanism Positive Posture at ChairOffice