This is a Sealy To Go 12" Twin XL memory foam mattress. It features medium support with three distinct foam layers for complete comfort: Sealy To Go Premium Responsive Memory Foam, Sealy To Go Advanced Comfort Foam, and Sealy To Go Ultra Support Foam. The mattress also includes a comfort knit cover, a 10-year limited warranty, and is designed & assembled in the USA. It has been used for my 7 year old for about a year and we purchased a larger bed for his room. Super comfortable, has a bamboo mattress pad, and waterproof cover.