Whale&reg; Mk100 Adult Silicone Snorkel Scuba Dive Seal Mask & Goggle with Good Vision & Tempered Glass for Free Diving,Spearfishing & Snorkeling,black SUPER SOFT SILICONE SKIRT AND STRAP! Whale diving mask has the sealing rim that contacts your face comfortably. A bad plastic mask is rigid and would make your face hurt as it seemed to suck to your face. Even the plastic frame would break and start leaking and no more playing in the water. Whale adult silicone scuba goggle is good and soft on your face and does not suck into your face as much and does not make your face hurt. KEEPING WATER OUT OF YOUR MASK! Are you still using a leaking diving mask? It is time to change for Whale free diving gear. The silicone skirt is soft and it seals well. These adult mask are for diving, scuba dive, snorkeling and spearfishing, because any fast movement that push off the wall strongly will result in leakage. If it leaks on the side, you may need to adjust it to be right because it does not quite sit right on your face. HERE COMES A MASK WITH GREAT FIELD OF VISION! We prefer the clear frame because it provides great visibility, the glass is so clear and the field of view is wide with the glass sitting close to your face. Get on and enjoy your snorkeling or scuba dive. SOMETHING TRUE ABOUT ANTI-FOD MASK! These tempered glass can anti-fog and a $3 anti-fog spray can deal with it. You may try to wash it with toothpaste or spit it without touching it by your hand and wash it. You also may need to dry it in shadow for next use. Good news, these tempered glass lens are anti-scratch. IT IS ALSO FIT FOR BID HEAD! Whale adult scuba goggles have quite easy and adjustable straps and the straps do not slip once you have them adjusted. The strap is very easy to adjust with the very nice clamps. Do not worry about your large size head any more and add it to your cart!