Wanna make your Roto Grip ball react better longer? Want a more consistent reaction shot to shot? Then this is the shammy for you! Best oil absorbing product on the market. Leather on both sides with a special absorbent pad securely sewn in middle. Restores that tacky feel to ensure a fresh surface contact to the lane each shot. Works on all types of bowling balls. Easy to clean – can be washed with soap & water, scuffed with a wire brush and let air dry = Good as new!