The MSR Night Glow Zipper Pulls are a convenient, lightweight upgrade to your tent's metal zipper pulls, allowing you to locate and operate your tent zips quickly and easily in the dark. Each pull is moulded from a glow-in-the-darkpolyurethane plastic that absorbs ambient light throughout the day and emits a steady glow for up to 8 hours at night. The larger, soft plastic body is easy to grip with gloved hands, while the nylon cord is woven with reflective thread for added visibility. They are universally compatible and replace noisy metal zip pulls on tents, jackets, and rucksacks alike.