you would order size 4 from the drop down menu

Color: Crimson/Indigo/Charcoal

022 (for a 15# ball)

On shoe (removable): S8 Slide

(2) Newly Designed 5" Wheels for Increased Mobility and Stability

Track Proof Hybrid Bowling Ball Weight:15 lbs. you would order size 4Track Proof Hybrid Bowling Ball Release Date: 1 14 21 Do you need even more proof? Track has got even more Proof in the form of a Hybrid high performance bowling ball. This ball combines the best of the pearl and solid versions to offer a strong mid lane reaction and down lane continuation on medium to heavy oil. Color: Red Black All colors do vary somewhat from the picture shown Coverstock: Prime Response Hybrid Core: Proof Finish: 500, 3000 Siaair