The tin cup system enables you to make your mark with a personalized ball marker using design of your choicethe tin cup is an ideal gift for tournaments corporate outings birthdays wedding parties holidays and of course for personal use to simply play golf and have fun the tin cup will make it easier than ever for you to identify and personalize your golf ball for those shots that happen to miss the fairway and end up in the rough or hazards for best results use with sharpie fine line