The stage 1 Glove Saver Pocket baseball is used to break in new gloves and to maintain the pocket on smaller gloves. New gloves are stiff and hard to close. The baseball pocket ball is used in stage 1 to facilitate the break in process. It is also used to maintain the shape on gloves 10.5 inches and smaller. If you prefer a smaller pocket in a larger size glove, it can also be used. This is the preferred pocket ball of Little Leaguers using smaller gloves.