I bought Watson's, and the effect is actually ok. Wearing it at night, I lost weight 1 cm in about three days, and then lost 3 cm in a week, that is, my calf lost weight. Besides, I didn't deliberately go on a diet. When I went to Watsons to buy stovepipe socks, I also bought chocolate. Eating and wearing makes you thin. It's amazing. Maybe the effect varies from person to person.