I've purchased elbow sleeve for my boyfriend. He operates crane and the repetitive movement of steering wheel was causing right elbow pain to the point he wasn't able to work out or play tennis. After on month of using Copper Joint the pain decreased substantially and he is back at the gym. He wears his sleeve at work and when working out to support his elbow. He is very satisfied with the product and the customer service is wonderful. I work in fitness industry and I have been recommending Copper Joint to my clients with injuries.