So far these have worked well for me on cold rides (30F or lower). They block the wind and kept me dry when I rode through some light rain. They stretch but not as much as Pearl Izumi's thermal tight but they fit well and are comfortable.
My only complaint is it can be a little difficult to get the cuff over my large (size 13) feet when taking them off due to the limited amount of stretch. A zipper might be useful for future versions.
