The Trekker space pen with a key chain attached to the posi-lock cap allows for easy accessibility. The Trekker space pen comes with a carabineer and a break-away lanyard making it easily attachable to a belt loop, back pack, purse, climbing gear, briefcase or anything else that is within your reach. Contains a Fisher PR4 Pressurized Refill, Medium Point, Black Ink, gift boxed