Snap a Glow Marker K onto your keys, zipper pull or other EDC item you want to add some visibility to. The Glow Marker has a rugged nylon body with our perpetual glow material molded in place. A split ring and Hardpoint microbiner make it easy to attach. Product Features Perpetual glow material offers long lasting, high performance photo luminescence Hardpoint microbiner included 12mm OD split ring Nylon body l PL (Photoluminescent) TPU