100% Nylon Stretch Fabric Swing Tech™ Brings Improvement To Every Movement Knit Stretch Panel Detailing Primaloft 100 Gsm Fill Inside Quilting Different Directions Quilted Lines Front Zip Pockets Chev Logo Back Neck Machine Wash Swing Tech™ Made to maximize your range of motion on every swing, Swing Tech provides noticeably less restriction through re-engineered construction and materials.