Kolcraft is a family owned and operated baby gear company. The Kolcraft Pure Sleep Therapeutic 150 crib mattress is an extra firm baby and toddler mattress with 150 durable coil springs, a waterproof surface and comfy cushioning throughout. The entire mattress passes GREENGUARD GOLD certification and ASTM crib mattress standards helping to ensure top quality and safety features. The mattress core is durability tested for years of use and carries a 10 year warranty on workmanship and materials. Use this mattress in your infant's crib as well as your child's toddler bed as he or she grows. The waterproof cover is reinforced to help prevent tearing and the entire surface and lock-stitched binding won't allow leaks to seep inside the mattress surface. This offers an easy-clean, wipe-clean surface.