These are the patented sunglasses that gently release moisture while they are worn to provide relief to dry, irritated eyes. Developed by a board certified opthalmologist, the glasses employ removable vented chambers with foam inserts that are charged by soaking in water. When the charged cartridges are inserted into the sunglasses, they continuously release moisture around the eyes for four to six hours to help soothe dryness, redness, irritation, and fatigue. A comfortable thermal plastic rubber gasket and flexible nose bridge help seal the sunglasses to the face and protect against wind, dust, and allergens. The polycarbonate lenses provide 100% UVA and UVB protection and are treated with an anti-fog coating and the nylon frame is durable and lightweight. Each cartridge lasts about three months. Includes a set of replacement cartridges and microfiber storage bag. Specify black with gray lenses or brown shell with copper lenses. (8 oz.)