Very good warmers
These are very good arm warmers. Cozy interior, tight enough to stay put but not so tight as to bother you. I'm 5'9" with average (i.e., non-workout) arms, and the mediums fit just right. The seam is noticeable when you put them on, and may leave a mark after you take them off, but it didn't bother me when riding. In fact, I basically forgot I was wearing them, which is to me the hallmark of good gear.