General Note: Please allow 24 - 72 hours for your Mattress to regain its full shape. Any memory foam will expand faster in a warmer room. In cold temperature, at delivery, your mattress may take a bit longer to return to full sized from its compressed state.The expansion time of the mattress will vary as per the surrounding Lightweight and durable. It is made with a high density thermo-bonded polyester fiber core that provides ultra firm support and a 100% Vinyl outer cover that is waterproof and stain resistant to wipe clean in an instant 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. Handcrafted in Canada. Made of imported textiles 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 Fits standard crib with internal measurements of 28⅝ in. X 53 in Safety 1st has received the Women’s Choice Award as an America’s Most Recommended brand for Baby Crib & Toddler Mattress