Japanese grading scale compression socks Features a three-stage pressure design, segmented forearm, calf & heel pressure With a V-shaped design on legs, rugged waveform design on foot & an open toe design Promotes blood circulation & lymphatic flow Improves leg edema, relieves leg fatigue & prevents varicose veins Designed to be easy, comfortable & relaxing Maximum pressure values: foot 24 hPa(18~24 hPa), calf 18 hPa(12 16 hPa), thigh 12 hPa(6 12 hPa) Made in Japan & approved by general medical equipment in Japan Perfect for home, work & going out Size details: S-M: Height 145-160cm; Butt 80-93cm; Thigh 45-53cm; Calf 32-38cm; Ankle 19-23cm M-L: Height 150-165cm; Butt 85-98cm; Thigh 50-60cm; Calf 36-42cm; Ankle 21-25cm