For those looking for a marker with a unique design that won't be the same as everyone else's. It seems like it will relieve tension when putting. It seems like those around you will react, making for a fun round of golf. The golf hat clip can be used on hats, belts, and pockets. Approx: Cap clip: 20 x 26mm Ball mark: 2.5mm Due to display color temperature, camera, ambient light, photography skills, etc., there may be slight color differences in some product photos. Please note that there may be slight differences in size due to different manual measurements. Shipping will be by regular mail.