I'm 5'10", 185 pounds and have an athletic build. I bought the XL because another reviewer said the sizes were too small. I think I should have bought the large (my usual purchase size). This item is good for the price, but it doesn't compress much (maybe the large size might make it feel that way). As mentioned, the leg holes are very loose and offer no compression at the end. This is not for serious athletes/runners. The quality of the material is good. After all, the length is long - to the knees.