Stay safe and protect your neck and shoulder with these Belay glasses. They quickly clip onto your normal glasses or sunglasses allowing you to look up at the climber without straining your neck. They are very light weight, only 30 gram and come with era hooks to ensure your glasses stay secure. Stopper protections prevent wear or damage against the glasses they are clipped on to. The carry case is firm, durable and has a double closing mechanism to ensure your YandY belay glasses stay safe. The carabiner means you can clip them onto your harness.