For hiking, backpacking or any outdoor activity. Provides ultimate comfort and support with special heel strike and forefoot cushion. 38-604 Size: #0 (Fits Women's Shoe 3-4)#1 (Fits Women's Shoe 5-6)#2 ( Fits Men's Shoe 6-7, Women's Shoe 7-8)#3 (Fits Men's Shoe 8-9, Women's Shoe 9-10)#4 (Fits Men's Shoe 10-11, Women's Shoe 11-12)#5 (Fits Men's Shoe 12-13)#6 (Fits Men's Shoe 14-15)

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