These have padding on the Achilles tendon area and non-slip material on the soles. Purchased from this site, my son tried them on but the size didn't fit, so I'm reluctantly selling them. Length: 45cm, Width: 16cm Size M - Recommended for those 150cm and taller Suitable for junior high school students to high school students, and also for women. There is some deterioration on the rubber part of the opening, but overall, the condition is very good. Please note that this is a personal inspection and item has been stored at home.