Measure the length of your shoe (example in image) and match it to the following chart. Measurements may vary slightly.
36" TALL WINGS
30 3/4" Shoe Length: Fits on 30" Wing.
36 1/2" Shoe Length: Fits on 36" Wing
42" Shoe Length: Fits on 42" Wing
48" Shoe Length: Fits on 48" Wing
60" Shoe Length: Fits on 60" Wing
42" TALL WINGS
42 7/16" Shoe Length: Fits on 42" Wing
48 7/16" Shoe Length: Fits on 48" Wing