Fabric: Tiny micropore-structured fibers make viscose HIGHLY WATER ABSORBING AND BREATHABLE, which is crucial for comfort. FEATURES: Breathable fabrics remove water vapour and heat from skin, leaving you feeling COOL, DRY and comfortable. TAG FREE: Tagless label on the neck of our sleep set offers ultra softness and comfortable, make sure sleep well all night. SAFETY: For child's safety, all the pajamas should always fit snugly. Loose fitting garment is more likely to catch fire. All of Vaenait Baby's pajamas are tight-fitting and there is NO-FLAME RETARDANTS. Washing Instruction: Keep VISCOSE fabric garment always new. VISCOSE is a silky and delicate fabric. Recommend use laundry bag to prevent from snagging and ripping while machine washing.