Epoch 1 is a classic, sporty frame featuring co-injected inlaid rubber that provides a non-slip fit comfortable for all day wear. The inlaid rubber not only optimizes comfort, but also improves the overall strength of the frame. Lenses are shatterproof polycarbonate and block 100% of UVA & UVB rays. Amber lenses, also referred to as copper, brown or "HD", block blue light which helps to add depth perception. They are good for low-light conditions and block less sunlight than the smoke lens. Epoch Eyewear is a Veteran owned and operated company. We are proud to be a part of the Veteran community and build a company that provides jobs and great products.