The Hiccapop Mattress for Pack-n-Play is a washable 38 x 26 x 1.5" thick topper designed specifically for babies. Made with polystyrene foam, this medium-firm mattress provides a comfortable and safe sleeping surface for infants. The white jacquard cover adds a stylish touch while being easy to hand wash for cleanliness. With a carry bag included, this portable mattress is perfect for on-the-go use and convenient storage. The assembled dimensions of 38 x 26 inches make it a great fit for Pack-n-Play cribs.