Crib foam mattress offer nursery grade high resilience foam provides support for comfort and posture its suitable for newborns and toddlers the mattress is surrounded by a breathable yet water repellent anti allergic cover crib mattresses are specially designed to fit almost all popular cribs available in market the mattresses are made from high quality nursery grade foam features manufactured by rainbow using high density cmhr 25 density hypo allergenic foam foam crib mattresses are 2 in