Fisher Space Pen Backpacker Keyring Pen Black 4″ Closed

This compact pen closes to 4 inches and features a two-piece design with a keyring cap, making it easy to attach to a pack or carry it on a keychain. The aluminum construction keeps weight minimal, while the medium point black ink cartridge writes underwater, upside down, at any angle, over grease, and in extreme temperatures—performance that matters in backcountry conditions where conventional pens fail.