Specification: Material: silicone for mask skirt, PC for frame, tempered glass for lens, PE for anti-fogging coating Diving mask weight: 210g/0.46 lb. Main Features: diving mask keep people safe Anti fog, anti scratch, anti UV lenses Shatterproof dual lenses Soft double-feathered edge skirt Wide strap design ensures comfort Micrometric buckles for quick adjustments 1. Easy-to-adjust Buckle System The diving mask buckles are easy-to-adjust, easy to use for choose the length of the strap, preventing distraction to people while swimming, snorkeling, and diving. Once fitted properly, the straps will not need to be adjusted again once in use.Diving mask head strap system makes it fast and easy to secure the mask to your face without pulling hair. 2. Flexible Nose Pocket Diving mask soft material allows quick and easy ear equalization while using for swimming, snorkeling, and diving. It also provides an exceptional seal to prevent water from entering. This allows a people to focus on exploring and having fun versus discomfort. 3. Fit and Comfort Diving mask uses 100% soft silicone skirt technology which implements varying silicone thickness and strength, the diving mask creates a strong and comfortable seal to prevent water from penetrating the mask without hurting the face,but also diving mask measure the eye distance, from edge of outer eye to edge of outer eye, to ensure proper fit of mask. This will prevent the diving mask from leaking and prevent discomfort while in use. Package Contents: 1 x Scuba Diving Snorkeling Silicone Mask Top-studio diving mask Our diving mask dual lenses and a low internal volume, is a comfortable mask designed for men women youth. Great field of view, is perfect for swimming in the pool and snorkeling in the sea.