-Size: 1" -Magnetic -Waterproof Hang Tab Packaging: Each enamel ball marker is individually packaged on a paper card inside of a protective cellophane sleeve with attached hang tab. Our ball markers are all magnetic so that they're compatible with magnetic hat clips and belt clips for easy and convenient storage on the golf green. (Clips not included.) Golf ball markers are the perfect golf gift for any golf lover, whether they're just starting out or already have an extensive collection of golf gear. Golf ball markers are used to mark the location of a player's golf ball without interfering with other players' shots.