Two pack of Rite in the Rain all-weather pocket pens. Proprietary ink and delivery system used exclusively in Rite in the Rain Pens will write without skipping in extremely wet conditions. Cap snaps securely onto end of pen creating a comfortable standard-size barrel. Pressurized ink cartridge performs in temperatures from -34C (-30F) to 121°C (250F), under water (down to 10,6 m / 35 ft), and at any angle. Technical Features Point Size: 0.9 mmNo refills Weight 23 g (.05 lbs) / pen Dimensions Closed Lenght: 8,3 cm (5.6") Open Lenght: 13,3 cm (5.25")  Diameter: 11 mm (.4375") Materials Plastic