The Cup-Holster is the best desk mounting 3 position cup holder that clamps to almost any surface! Sick of cluttered desks? We were too! We developed the Cup-Holster with cluttered desks in mind. The Cup-Holster can prevent costly spills and save you valuable desk space! The Cup-Holster is perfect for holding cups, mugs, bags, headphones, keys, tv remotes, phones, and much much more! The clamp attaches securely to the side of your desk, and the cup holder portion slides firmly into place in one of its three positions allowing you the option to have your mug handle always face the direction you desire. The Cup-Holster is the best desk cup holder, simply slide the cup holder firmly onto the clamp in one of the three grooved positions, secure the clamp to the side of the desired table/ledge and enjoy having a secure place to hold cups, mugs, headphones, bags, phones and much much more!