Sierra Sleep by Ashley M80211 Traditional Classics Mattress, Twin, White FIRM TWIN SIZE MATTRESS: This kids mattress is made for sweet dreams. Designed with firm support and cooling memory foam for sleep that cradles them in luxury. Plus, it's maintenance free with a design that doesn't require flipping or rotating COOLING MEMORY FOAM: Designed with innovative elements like a eucalyptus-based ventilated top foam layer for temperature correction. A high-density support core offers the perfect combination of pressure-relieving comfort and dynamic support INVITING COMFORT: The soft and luxurious four-way hyper stretch knit cover (polyester/Tencel) allows kids to move comfortably. Cover with zipper for machine washing TWIN SIZE: Measures 38" W x 74" D x 6" H to fit twin size bed frame SET UP IN MINUTES: Just unpack and place your new mattress on top of foundation or spring box (sold separately). Comes with a 1-year limited warranty DIRECT FROM THE MANUFACTURER: Ashley Furniture goes the extra mile to package, protect and deliver your purchase in a timely manner BUY WITH CONFIDENCE: Designed and manufactured by Ashley Furniture Industries. The trusted source for stylish furniture, lighting, rugs, accessories and mattresses. For every taste and budget. Since 1945