180° FULL FACE DESIGN - Makes it easier than ever to breathe comfortably through your mouth or nose while you are snorkeling. Provides a 180° viewing area- the largest of any snorkel mask on the market today guaranteeing that you will see more fish and sea creatures than ever before. Takes away the inconvenience of holding the snorkel in your mouth, allowing you to breathe naturally. DRY SNORKEL TECHNOLOGY - Stops salt water from getting into your mouth and prevents gagging. Separate inhaling and exhaling channels effectively stop the mask from fogging up in physics. Anti-fog coating on the lens and anti-fog inserts also increases the anti-fog effect. Quick-adjust ratcheting mask strap buckles, soft high-quality silicone rubber skirt.