The Full Thin White slip-on slider fits the full length of the shoe and holds in place with the elastic strap and fits either foot. This slider is good for beginner or novice curlers. 1/16" Asham White has a speed rating of 5 on a scale of 10.Basic Size chart:XS-Women's sizes 5-7.5SM-Women's sizes 8-10MED-Women's sizes 10.5-11 & Men's sizes 7-9LARGE-Men's sizes 9.5-11XL-Men's sizes 11.5-14