Silicone waterproof Swimming glasse 1.Lens:PC/Anti-fog 2.Gasket:TPR/.100% waterproof 3.Strap:Silicone 4Nose-belt:Incorporate Fashion Silicone waterproof Swimming glasses Material information 1.Design is exquisite 2.Price is reasonable 3.Quality is certificated 4.No chemical substances acceptable can be design ? yescan be testing ? yes (Have SGS, CE, ROSH, BS5883:1996 and EN71,72,73 certificate.) ...