These soft insoles feature memory foam cushioning for added comfort and support throughout the day. Use them in any type of shoe for ultra-soft comfort with every step. High density polyurethane Microban antimicrobial protection Memory foam naturally adjusts to the shape of your foot Deep heel cup increases support Size small fits women's shoe size 5.5 - 8 Size medium fits women's shoe size 8.5 - 11.5 Imported . . NOTE: This product is sold in U.S. sizes. While the physical product may display both the U.S. & U.K. sizes on it, please place your order using the U.S. size.