THE 9 bowling shoes require a special patented interchangeable sole design that comes ready to fit specified sizes. This S5 Sole is designed for the bowler to have an average slide on the lanes. The sole also has HyperFlex hinges to help align to the shoe properly in the HyperFlex Channels. **Not compatible with Dexter SST shoes. Saw Tooth (S4/S6 combo) Average Slide The sole also has HyperFlex hinges to help align to the shoe properly in the HyperFlex Channels. **Not compatible with Dexter SST shoes. Saw Tooth (S4/S6 combo) Average Slide Large - Men's 11-12 XLarge - Men's 13-15 X-Small: Mens 5-6.5, Small: Mens 7-8.5, Medium: Mens 9-10.5, Large: Mens 11-12, X-Large: Mens 13-15