WAVE Mask Dry Snorkel Set for Adults - Anti-Fog Glass, Purge Valve, Snorkeling Splash Cap MS1381S25 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 (100% leak-proof). 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. One size fits all silicone face skirt fits a wide range of faces Splash resistant snorkel to reduce water from entering snorkel top while surface swimming Comfortable silicone mouthpiece perfectly Angled for maximum comfort, flex section delivers a better fit that moves with you