"The Keysmart Tactiv Wp09 Weatherproof Bolt Action Pen is a waterproof pen machined with robust aircraft grade aluminum, a stainless steel pocket clip and a write in the rain copper ink cartridge. The premium materials and bolt action design are inspired by the M16A4 and is 100% waterproof. The rugged grip ensures a firm grasp in any condition while the stainless steel pocket clip provides for a comfortable and secure carry so you're not worried about losing your tool. All coming in at a weight of .0848 lbs. Your words have weight, this pen has power. KeySmart was founded on the idea that complex problems often have simple solutions. Our founder, Michael, grew frustrated with his bulky, noisy key chain. Was a key ring really the best way to carry keys? For months, he worked on designs and prototypes for a solution. Then, in 2013, he discreetly launched a Kickstarter for a compact key organizer called KeySmart. He never expected it to raise 329,862 and grow into a company with over 50 products.