Sealed gel frame is fitting on your face, so do not need to worry about leakage. Double coated tempered lens is anti-fog and can withstand deep water pressure. You will have a great experience with this nice diving goggles.<Br/>feature: <br/>tempered glass lens: shatter resistant and scratch resistant lens to withstand deep water pressure.<Br/>clear &amp; faithful image: double coated anti-fog lens offer a wide and clear viewing for free underwater exploration.<Br/>sealing: soft and flexible liquid gel edge skirt perfectly fit on face to prevent leakage.<Br/>adjustable: simply pull the strap to desired fit and the buckle will secure the goggle in place.<Br/>specification:<br/>material: gel &#43; tempered lens<br/>style: am408 mask / am308 mask / am708 mask (optional)<br/>lens frame size: <br/>am408: 15.5 * 7Cm / 6.1 * 2.7In<br/>am308: 15.5 * 7Cm / 6.1 * 2.7In<br/>am708: 16 * 8cm / 6.2 * 3.1In<br/>weight: 177-211g / 6.2-7.4Oz<br/>package weight: 185-219g / 6.5-7.7Oz<br/>package list: <br/>1 * diving goggles <br/>