Backpacker Space Pen

The Trekker is the same functionality in a slightly smaller package.

The Backpacker Space Pen can hang upside down forever yet function immediately when needed. This pen has been a fan favorite for years due to its ease of carrying. Attach this to your keys, backpack, belt loop, hiking gear, fishing sling, camping equipment, and much more.

The Backpacker is a two-piece pen with a key ring attached to the cap of the pen. Each carries a pressurized PR style ink refill cartridge, which means that they offer all of the unique capabilities that are synonymous with Fisher products: they will write upside down – at any angle, under water, through grease, extreme temperatures (-30 to +250 degrees F), on almost any surface, three times longer than the average pen, and of course in the gravity free vacuum of space.