Made of carbon fiber and nylon, it is rugged but weighs just 0.35 oz (10g). The pressurized blue ink cartridge allows the pen to write in wet conditions, below-freezing weather or scorching heat, as well as upside down or under water.
Unscrewing the barrel from the carabiner cap and turning it end for end exchanges the pen for a stylus tip to use with touchscreen devices.
Available with translucent gray or blue end caps. 4-1/4" long overall. Refill cartridge available separately.