THIS GOGGLE IS DESIGNED FOR:Maximum forward visibility in open water—so you can sight with less head lift, hold better body position, and swim straighter with less effort. It also helps you find—and follow—the feet in front of you more easily. How? Instead of a flat, forward-facing lens that looks straight down in the water, the R1 features a patented 11º tilt that lets you see in the direction you're moving—for straighter, faster swimming. R1 TECH SPECSStorage:Comes with premium microfiber bag Protection:Blocks 100% of all UVA, UVB, UVC & harmful blue light up to 380nm while reducing glare and protecting the eyes Coatings:Superior hard coat on exterior face for anti-scratch and extended durability; Hydrophobic coating to reduce surface tension for hydrodynamics; anti-fog coating Strap:Flat silicone head strap with locking adjustment clip Frame:Unibody semi-rigid nosebridge Gaskets:Soft, protective & hypo-allergenic TPR gaskets; no latex, no PVC Lens:Patented, medium-sized 48mm (W) x 33mm (H) lens with 11 degree retroscopic tilt on front face, beveled peripheral face, and premium-grade polycarbonate lens