ScubaPro Scout Scuba Diving Mask Our sporty low volume Scout mask for easy clearing and comfortable fit. The most important consideration in mask selection is fit. No two faces are alike, and the SCUBAPRO broad range takes individual differences into account. The basic difference in masks lies in the number of lenses. Single-lens masks were the first developed and remain a popular choice worldwide because they provide a broad, uninterrupted view. With the advent of silicone skirts, twin-lens masks have become increasingly popular because they typically lower internal volume, making clearing easier. Low volume for clearing convenience, yet designed for maximum visibility. Universal, super comfortable fit for a variety of face shapes. Double sealed silicon skirt with extra flexibility for even easier clearing. Scout is softly textured and indented around the nose, making it easy to grip, pinch and clear without affecting the entire seal around your face. Swivel buckles for easy adjustment. Tempered glass for safety and durability.