Crafted in cozy thermal, these PJs get him ready for bed in one easy zip! Carter's cotton PJs are not flame resistant. But don't worry! They're designed with a snug and stretchy fit for safety and comfort.2-way zip design to keep baby warm and snuggly during diaper changesSafety tab to protect little chinsRibbed cuffs and necklineBuilt-in footies, no grippersFoldover cuffs on newborn and preemie sizes60% cotton, 40% polyester thermalImportedMachine washableSTANDARD 100 by OEKO-TEX®20.HUS.39362 Carter's / OshKosh Baby 1-Piece Dinosaur Thermal Footie Pyjamas