Size Chart: Size: S/M-1 , L/XL-2 S/M-1: 16CM (Foot Length) + 29CM (Leg Length) L/XL-2: 17CM(Foot Length) + 31CM(Leg Length) For the crowd: Nurses, Doctors, Pregnant woman. Office workers, Teacher. Chef, Building Worker, Restaurant Server, Packing. Workers who stand all day long. Help to: Reduced the tiredness pain and swelling. Improvements of blood flow and circulation. Reduce spider and varicose veins symptom. Recover from surgery and intense sports. Provides true graduated compression to promote blood circulation, prevent cramp, fatigue, swelling,pain, help muscle recovery. Relieve DVT, spider veins, and varicose veins and such symptoms For Whom compression socks suit - who has long-time standing job and sedentary job, and who often takes planes, and for office workers, such as nurses, servers, stewardess, teachers, cook, drivers, and pregnant women. Ideal for Everyday Use - Applicable in various exercises ( basketball, football, sports, work-out, hiking, running, cycling, and marathon). Unbeatable Guarantee - 100% MONEY BACK GUARANTEE WITHIN 30 DAYS. Your satisfaction is our top priority and we would reply to your satisfaction if any questions, pls kindly contact us.