NOTE: Item model# 5805096 is the same item as model# BM204. There was a change to the model number for manufacturer internal purposes. Actual item is same Lightweight and durable. It is made with high density thermo-bonded fiber core that provides firm support and a 100% Vinyl outer cover that is water resistant and wipes clean. Mattress dimensions: 52"L x 27.5"W x 5"H. Weight limit: 50 lb. For optimal use, rotate mattress every 2-3 months. 10-year limited warranty. Assembled in Canada. This mattress has achieved GREENGUARD GOLD Certification. GREENGUARD Certified products are certified to GREENGUARD standards for low chemical emissions into indoor air during product usage.Free of phthalates and lead Fits standard crib with internal measurements of 28? in. X 53 in. ;5" thickness extra firm mattress Safety 1st has received the Women’s Choice Award as an America’s Most Recommended brand for Baby Crib & Toddler Mattress