Wonder Dream Baby Crib Mattress and Toddler Mattress, Organic Cotton, 100% Breathable100% Breathable: Our infant mattress not only helps regulate temperature by allowing air to pass through the entire mattress, but there are no VOCs, no off gassing, no toxic emissions. We always aim to provide baby with a safe sleep on a crib mattress. Water Repellent: This baby mattress encasement is water repellent on the top and sides, allows air and heat to ventilate on the bottom. The backside is made from anti flame materials without any