UV 420 Lens Treatment protects against harmful high-energy visible (HEV) light; CrystalView Optical Lens provides superior clarity, color and transmission of light; Anti-Reflective (A/R) Lens Treatment - Anti-reflective coating enhances overall vision; Anti-Fog Film - Durable, long lasting material to greatly improve visibility by preventing mask fogging; 3D SYNQ - A unique Fitting Ring built into the Mask Skirt providing an ideal fit for all face shapes; Swift Buckle 3D - A new low-profile buckle and mask strap for smooth effortless adjustments; Freedom Technology/Freedom Dry - Enhances comfort and fit by utilizing a revolutionary low friction skirt surface; 3D Mask Strap - TUSA's unique 3D design contours to the shape of your head; Round Edge Skirt improves both seal and comfort of the mask; Panoramic View - Mask providing an extra wide field of view