Specification:Category: Full-dry diving maskSize: S\/M、 L\/XLLens Material: PCMask: SiliconeFrame: PCHead Band: Waterproof strapWeight: 570gFunction: Free breathing、 Wider&Clear vision、 Strong anti-fog.Features:Dry top system、 automatic closing to prevent water flowing in.Air flow anti-fog access、 free breathing and keep ventilating.Elastic head band for comfortable wearing.Water draining access、 quick drainage when water inflow.Larger breakage-proof lens、 wider and clear vision、 impact resistant and safe.Package Included:1 x Diving Mask