Nose valve diving goggles, professional nose valve/HD maskMade for comfortable diving to make mask draining easier! Hold down the mask, bow your head, and exhale forcefully through your nose to easily drain your mask!Tempered lens, thickened high-transparency tempered glass, clear vision, anti-collision and compression, safe and durableStainless steel frame, frame with stainless steel edging, stylish and timeless appearance, strong and durable frameProfessional nose valve, unique nose valve structure, you can easily drain the mask by holding down the mask, bowing your head, and exhaling forcefully through your nose.Adjustable buckle strap, you can freely adjust the elasticity of the buckle, easy to use and comfortable to wearSilicone mask, silicone, soft and comfortable, no odor, curved structure on the face, close to the face to prevent water leakageColour: BlackMaterial: HD tempered glass + stainless steel + siliconeSize: 17 x 11cmPackage Contents:1 x diving maskOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.