The Costway Portable Tri-fold Pack and Play Mattress Pad is designed for infants and toddlers, featuring a high resilient foam side ideal for babies aged 0-9 months and a cozy gel-infused memory foam side perfect for kids over 9 months. This innovative mattress is not only cooler and more breathable but also folds easily for space-saving storage and includes a convenient carrying bag for effortless transportation. The durable polyester cover with zippers ensures easy maintenance. Certified by ASTM and CertiPUR-US, this versatile mattress is suitable for daycare, kids' rooms, and living rooms, fitting most pack and play playpens.