Changing your grip size is now as easy as replacing your grip. From a standard grip, you can go down one size (-1), up one size (+1), or up 2 sizes (+2). If you like your grip size and just want to refresh your grip's feel, use the (0) to keep it the same size. For more technical information, changing your grip with the +/- Grip only adds 2 grams per size! Compared with the traditional way of building up a grip with a sleeve that adds 20 grams, your racquet's balance will not change. No special sleeve or heat gun needed, just take off the old grip and put on a +/- Grip.