Moment - Rear Lens Cap
"Moment Rear Lens Cap for all lenses"
"A cap that attaches to the lens cap you already have to protect the back opening of your Moment lens."
"High strength adhesive to attach to any Moment Lens Cap. Press fits to the back lens opening for more protection. Fully enclosed attachment leash so you don't lose it."
"Made from TPU and hypalon for rugged durability."