Engineered for athletes who demand clarity, comfort, and durability, the SISU Model sunglasses feature anti-fog, adjustable arms and nose piece, and a quick-swap lens system. Customizable with polarized, photochromic, or prescription options, these Canadian-designed sunglasses perform in any light or weather condition. Perfect for cycling, running, Nordic skiing, pickleball and water sports like dragon boating, canoeing and kayaking.