The Mini Marker Pen is a portable fine tip marker. This makes it easier to carry around in your pocket or in your bag without taking up a lot of space. You can freely mark your ball when out on the golf course or preparing for your round. The mini marker pen is permanent on nearly every surface & it also dries really quickly for when you need to quickly mark up a ball to play with on a hole or when you need to play a provisional and it isn't marked up. The marker also features a hand hook on the top so you can attach it to a carabiner or keychain!