Why buy me high quality high density foam assures your baby of a comfortable and healthy nights sleep the dreaming night mattress is encased in a waterproof cover with an outer cover combining coolmax and actipro perfect for keeping your baby cool and your mattress clean and allergen free about me foam crib mattress high density nursery grade foam to provide firm and gentle support coolmax fabric technology to keep baby cool triple action actipro to reduce allergens bacteria and odours