3rd Party Lab Tested, Anti Microbial Fabric Lining. Composition 57% viscose, 38% cotton, 5% Lycra. Anti Microbial Inner Lining. 100% Microfiber, EPU Lining Water Resistant Fabric. It assures soft and soothing touch against the skin. Your little one can team it up with a pair of sunglasses for a stylish look.