Our Cotton is Water-resistant(protect your mattress from water spilling ),hypo-allergenic fill,non-toxic, anti-allergic barrier,chemical free.This soft and comfortable mattress protector is so practical , it bears absolutely no comparison to the sweaty, noisy plastic under sheets of days gone by!. The elasticated slip-on ensures messy-free fitting and easy to use, which fits your mattress perfectly.Do not iron,bleach.Do not dry under direct sunlight