PURE by Babyletto crib mattress bundles contain only the purest ingredients for safe sleep. Foster healthy sleep for your baby with a non-toxic polyester PURE Core crib mattress and easy-to-clean DRY waterproof cover. Our vegan non-toxic mattresses are free of polyurethane foam, "soy" foam, vinyl, PVC, chemical flame retardants, dyes, allergens, phthalates, PFCs, synthetic latex, and off-gassing materials. Mattress bundle includes two pieces: a double-sided PURE Core mattress core and a soft waterproof DRY cover.