Rite in the Rain Pen
Brand: Rite in the Rain
This amazing pen will write through the toughest of conditions. Pressurized ink cartridge performs in temperatures from -30F to 250F, under water (up to 35 ft), and at any angle. Permanent ink writes through water, sweat, grease, and mud without clumping or smearing. Refillable with pen refill sold separately.