WACOOL Snorkeling Package Set for Adults, Anti-Fog Coated Glass Diving Mask, Snorkel with Silicon Mouth Piece,Purge Valve and Anti-Splash Guard. ONE SIZE FITS ALL: This snorkeling set for adults comes with fully adjustable head straps and a high-grade silicon face skirt which molds to fit virtually any face shape. The ribbed design provides extra support and ensures a water-tight seal. ANTI-FOG COATED TEMPERED GLASS: Enjoy maximum under-water visibility. Advanced lens shape design and tempered glass with anti-fog treatment means you'll have a crystal clear underwater experience, especially for beginners. One piece glass design enables better and wider vision under water. FULL DRY SNORKEL with PURGE VALVE + SPLASH GUARD: The advanced anti-splash system prevents water from entering the snorkel and the purge valve allows for easy clearing and draining water out of the snorkel. PROFESSIONAL GRADE MATERIALS: The mask and snorkel are manufactured using top grade materials. The silicon mask and mouth-piece provide maximum comfort and long-lasting performance. GUARANTEE: This snorkeling set for adults is backed up by a lifetime hassle-free guarantee. Our snorkel gear and scuba equipment is fully tested and we stand by every single product. Customers are our top priority and we will happily replace any defected products.