Royal Journey Full Face Free Breathing Design Snorkel Mask for Adults and Youth 1.L/XL : Inner Size:7.48x 5.12 inch,Outer Size: 9.06 x 7.48 inch Our mask provides a 180 viewing area- the biggest of any snorkel mask on the market today guaranteeing that you will see more fish and sea creatures. 2.Free Breathing Design Snorkel Mask takes away the inconvenience of holding the snorkel in your mouth!Spend more time in the water and less time messing with equipment. 3.The snorkel mask stops the salty water from getting into your mouth and prevents gagging. More Snorkeling and less worrying. 4.Mask is Perfect for ALL ages, both Beginners and Experts. Great for the whole family! 5.Snorkel mask is great for surface swimming activities,including snorkeling and pool swimming.