Fisher X-Mark Space Pen w/Clip - Black Matte G10 The pens are made of

The pens are made of 6061 aluminum

a microporous barrier to protect internal components and a high performance circuit that automatically protects from overcharge

Balancing ultralight weight with absorbency

Even with the entire kit packed

Laptop compartment dimensions:

Fisher X-Mark Space Pen w/Clip - Black Matte G10 The pens are made ofThe squared off top (cap) of the X Mark gives it a modern, tech look, while offering all the amenities of the classic Bullet pen design. The new Fisher X Mark is ultimate dependability in a compact size, making it the perfect take along pen for people who camp, climb, hike, ski, bike, fish, snowboard, hunt, kayak and scuba dive. Fisher writing instruments write in temperatures from 50 to 250F, underwater, in zero gravity, at any angleeven upside down!