MT5250BWCS Features: -Memory Foam Crib Mattress.-260 heat tempered heavy gauge coils.-Heavy 6 gauge border wire for extra strength and side support.-Side flex clips for the ultimate side edge support.-Ortho support layer for additional durability and prevents loss of cushioning material.-Toddler side: Memory foam layer for extra comfort.-Triple laminate cover anti - bacterial.-Deluxe jacquard fabric cover with waterproof backing.-Non - toxic and water resistant.-Air vents help to keep mattress fresh.-Made in U.S.A. Dimensions: -Dimensions: 5.75" H x 27.5" W x 52" L.