Add a rear lens cap to your T-Series or M-Series lenses. The press-fit rear cap keeps the back opening of your Moment lens clean and safe, while the durable attachment leash keeps it close by. For T-series thread the Rear Lens Cap leash through the molded anchor loop of your existing T-Series front lens cap. Pass the strap back through the leash slot to secure, similar to a luggage tag.For M-Series simply adhere the Rear Lens Cap to the front of your existing M-Series front lens cap.Please note that you must choose the Rear Lens Cap that corresponds to the series of your front lens cap.Not compatible with O-Series lenses.High strength adhesive to attach to any M-Series Lens CapPress fits to the back lens opening for more protectionFully enclosed attachment leash so you don’t lose itMade from TPU and hypalon for rugged durabilityNot compatible with O-Series LensesCovered by our 12 month warrantyTech Specs:Strap Size: 100.5mm long, 24.7mm wide, 0.6mm thickCap size: 20.5 long, 14.5 wide, 3.7 thickWeight: 1.4g (not attached to a cap)