Epoch 2 is a unisex frame and features the seasons hottest colors. The half-framed Epoch 2 features co-injected inlaid rubber in the arms, which provide comfort for extended wear and increase durability. The lenses are shatterproof polycarbonate and block 100% of UV 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.