The lower the # the more slide and the higher the # the less slide. 
 
3G Slide Scale: 
1 - Teflon (Light Gray) - MOST SLIDE 
2 - Felt (Gray) 
3 - Chrome Leather (Light Tan) 
4 - Deer Skin (Cream)
5 - Oiled Leather (Brown) 
6 - Back Skin (Orange) - LEAST SLIDE
 
Soles come in rectangular shape, which can be cut-to-fit Right or Left handed shoes.