But the section they are strange. I have reasonably strong arms. From the vastness of the upper arm (and length) fits with L, XL was too far and has slipped. The arm warmers are, however, at the elbow / forearm not really on, but pucker. However, the holding rubber top fits and should really not be closer. With Vaude (although the warm version) I have better experience, since XL fits me over the entire length like a glove. Anyone looking for close-fitting arm warmers will possibly be disappointed.
Update: I had the opportunity to test the arm warmers in size M and have to say that fits! They sit on the complete length properly and tight, not too tight on the upper arm and the length is still perfectly up to the gloves. I smooth a pair bought later and change my rating on full 5 stars. For people with thin or short arms, looking for the tight arm warmers, but they are hardly suitable.