Shoe Sole and Heel information Old Dexter Sole Set: S-2 Brown Leather - Less Slide Use this sole when bowling on slippery approach conditions, such as synthetic lanes. S-4 Red Leather - Short Slide Use this s4 sole when bowling on moderately slippery approach conditions. S-6 White Microfiber - Long Slide Use this s6 sole for normal to slippery approach conditions. S-7 Perforated Yellow Leather (Buckskin) ...