Ryders Eyewear Caliber. A classic performance style, Ryders Eyewear Caliber Antifog glasses allow you to customize the fit. The frame is made of Grilamid TR90 thermoplastic, a Swiss technology. This incredible thermoplastic offers flexibility, durability and light weight, which makes it the perfect material for performance eyewear. Adjustable nose pads and Hydrophilic temple tips, for extra grip, allow you to customize the fit of your eyewear for comfort and stability, and the wide temple arms provide extra protection. These features also help you fine-tune the amount of airflow behind the lens to keep your face cool and help combat fogging. Impact resistant and optically correct, Caliber lenses provide 100% protection from UVA, UVB and UVC rays as well as harmful, high energy light to 400nm.The back of the lens has a military-grade, hydrophilic layer. The layer absorbs and disperses water vapour/humidity throughout the material, eliminating the opportunity for it to condense on the surface as fog. The fronts of the lenses are treated with a hydrophobic coating. It defends against saturation by shedding water to provide a clear view, free from large drops and water marks. Like all Ryders lenses, Caliber lenses are decentred, making them optically correct to reduce distortion and eye fatigue. They're impact-resistant and scratch resistant.