Japan medical grade compression socks for lymphedema Features a V-shaped design on the back of the lower leg & an open toe design Promotes blood circulation & lymphatic flow Improves leg swelling, relieves leg fatigue & prevents cramps Designed to be comfortable & relaxing The anti-slip design helps prevent sprains while increasing pressure on the sole of the foot Maximum pressure values: ankle 33 hPa, calf 23 hPa Made in Japan & approved by general medical equipment in Japan Perfect for home, work & going out Size details: S-M: Calf 32-38cm; Ankle 19-23cm; Foot length 22-24cm M-L: Calf 36-42cm; Ankle 21-25cm; Foot length 23-25cm