Fabric 100% Polyester TOG Rating None (77-78 degrees Fahrenheit) The Flying Squirrel pajamas double as a wearable blanket, keeping your little one cozy no matter how they toss and turn. * Breathable fabric with gentle stretch * Loose fit for plenty of room to grow * Ribbed cuffs at wrists and ankles prevent hiking up during sleep * Designed based on safe sleep recommendations from the American Academy of Pediatrics (AAP) * Suitable for little ones 12 months–5 years