Product Description These Unisex Nike Vapor Photochromic Goggles feature lenses that darken automatically when exposed to sunlight. The low-profile design swim Goggles feature soft and flexible silicone gaskets and a Swift Track nose bridge system that's easy to customize for a personal fit. Additional Details FINA approved PHOTOCHROMIC LENS darkens automatically when exposed to sunlight;LOW-PROFILE design with soft, flexible silicone gaskets NIKE SWIFT TRACK nose bridge system for fast and easy customization 100% Latex Free 60% Silicone 30% Polycarbonate 10% Thermoplastic Polyurethane (Tpu)