Write in the rain, frigid temperatures (-50 F), snow storms, or in the boiling heat (+400 F) with these Rite in the Rain All-Weather Pens in black/chrome. Permanent ink is pressurized and similar to rubber cement. Though they were originally developed for astronauts, Letter Carriers can now use the same technology on their postal routes to fill out any and all forms. Featuring a fine tip with black ink, you can also write over grease, fingerprints, and photos with All-Weather Pens.