Baby Crib And Toddler Bed Mattress By Safety 1St Heavenly Dreams, Waterproof Women across America voted and Safety 1st earned the title of America?s Most Recommended? brand for Crib Toddler Mattress. Let your little one dream big with the Safety 1st Heavenly Dreams Crib Toddler Bed Mattress. The high-density thermo-bonded polyester core offers ultra firm support to ensure a restful night of sleep. This durable baby mattress is lightweight and easy to maneuver and flip; plus, it makes nighttime wake ups quick and simple thanks to the waterproof and stain resistant 100% Vinyl cover that wipes clean in no time. This Safety 1st mattress is made without the use of flame retardant chemicals and has achieved GREENGUARD Gold certification, meeting the standard for low-chemical emissions for a sleep environment that?s always safe and sound. Assembled in Canada, this Safety 1st mattress comes with a 10-year limited warranty. 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 28? 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