YP Swimming Mask Goggle Diving Equipment with Scuba Snorkel set Double edge facial seal for superior comfort and fit Angled lens swimming mask allow you to have a wondering download vision The Soft Touch buckle and silicone strap which make the adjustment quickly and easily Dry Snorkeling set prevents excess water entry when submerged, which makes you a enjoyable entertainment Very soft silicone, tempered glass,best for underwater activities