Phantom Aquatics Navigator Mask Fin Snorkel Set Mask: Two Window, 100% High-quality Silicone, Tempered Glass Lens, Easily Adjustable Buckle. Fins: Open Heel Foot Pocket for Bare Feet, Adjustable Heel Strap for Customized Fit. Long Blade For Easy, Powerful Kicking, Soft Elastomer Materials For Exceptional Comfort. 100% High-quality Silicone, High-quality, Comfortable, and Durable Silicone Mouthpiece. Adjustable Clip for Securing to Any Mask, Dry-top Valve Seals Breathing Tube While Submerged.