Engineered with anatomical design and Targeted Compression, providing a Custom-Like Fit and reduced risk of blisters, plus Ultra Light Cushioning takes up minimal room inside the shoe.
S=(Shoe sizes: Women's 4-6.5
M=(Shoe sizes: Women's 7-9.5; Men's 6-8.5)
L=(Shoe sizes: Women's 10-13; Men's 9-12)
XL=(Shoe sizes: Men's 12.5-15.5)