Silver Cross - TrueFit™ Eco Fibre Cot / Crib Mattress | White | Breathable & Hypoallergenic Bedding For Babies / Newborns & Toddlers | Water Resistant Give your little one a great night’s sleep on the TrueFit™ Eco Fibre Cot Bed Mattress. The eco fibre core aids breathability, regulates temperature and is water-resistant. Shop now.