Panoramic 4-Lens Snorkel Mask: Provides an awe wide visual field Underwater, almost no visual obstacle. Wearing the Scuba Mask and Imagine that you are like a graceful fish swimming freely in the water! HD Tempered Glass Diving Mask Lens: Equipped with the shatter-resistant glass lenses to withstand deep water pressure. Scratching resist lens instead of polycarbonate enables you a clearer view under water and hardly to leave any scratches to your lens. It is safer than ordinary plastic lens diving goggles.On other hand, the tempered glass would be better anti fog performance, just scrub with toothpaste or saliva to prevent fogging. Premium Silicon Skirt & Strap: The Swim Mask is made of food grade super soft silicon, which is environmentally friendly and healthy. The highly easy adjustable mask buckles and flexible face skirt, perfectly engineered to fit virtually any face shape and heads in different sizes, whatever youth, adult, men & women. even you are a whiskers face. No leakage underwater for Scuba and Freediving, keep diving safe is basic standard. Adapt to Any Diving Sports: The Diving Mask is light weight and small volume. It would fit to Scuba, Snorkeling and freediving. Especially good for scuba, the 4 window lenses would resist stronger water pressure. Enhanced safety for scuba divers. Fast Adjustable Strap: The high stretchy soft silicone head strap installed on the diving Mask for No More Straps Moving underwater. And the smooth strap buckle ratchet is easy and fast to adjust, while the Snorkel Mask is on the face, for adult youth and kids size in diving.