High Cost-Performance: The same quality as a top-notch manufacturer, but is affordable. (Ultra lightweight only 1.1 oz (30 g)): The all-purpose insole material is made of PU foam, which is used as an insole material for professional sports athletes, making it ultra lightweight, yet not too soft and not too hard. Comfortable material COOLMAX for comfort at all times: The drying speed is 5 times more than cotton (cotton), and uses COOLMAX that quickly absorbs sweat and releases it to the outside. Keeps your feet comfortable. (Full of Expert Knowledge) We have incorporated the knowledge of Ishimoto experts in motor guidance and health making. Versatile insole that can be used by men and women of all ages from teens to 60s. Very easy to use. Available in 2 sizes: Mens 9.1 - 11.0 inches (23 - 28 cm), Womens 8.7 - 10.2 inches (22 - 26 cm). Easily adjust the size by simply cutting along the attached size guidelines card. Accessories: Size Guideline Card