Good warmers for chilly days
Wore these on a cool (low 50s), damp, and very windy ride and my arms felt comfortable--they neither got too hot through a hard effort nor did they get chilled. Simply perfect. I have long sleeved jerseys but the arm warmers extend the use of my short sleeved jerseys deeper into the year.
I normally wear mediums in Castelli but I have the usual cyclist's noodle arms and so bought these in a small and am glad I did. The warmer stayed put on my arm--no tugging or adjusting on the ride was required at all. The gripper was not too tight. They are oh-so-slightly longer than I needed, so the small can fit someone who is average height.