Pencils will work great on Rite in the Rain but sometimes you just need a pen. These real All-Weather Pens write on wet paper and upside down in temperatures for -30F to 250F. The ink won't leak, evaporate or blow up in your pocket! The pen is 5 1/4 in open, 3 3/4 in closed. Pressurized ink cartridge performs in temperatures from -30F to 250F, under water (up to 35 ft), and at any angle. Compact when you need it to be but still offers the comfortable writing experience of a full-size pen. Permanent ink writes through water, sweat, grease, and mud without clumping or smearing. Size: 5.25" L, 0.375" D Weight: 0.05 lbs Manufactured: U.S.A. Barrel Color Flat Black Material: Powder-coated brass Features: Convertible cap Ink Color: Black Point size: 0.9mm Cartridge: Pressurized, performs in temperatures from -30F to 250F, under water (up to 35 ft) Refills: Available