Kevin A.wrote a review of Castelli UPF 50+ Light Leg Sleeves on June 5, 2019
Familiarity: I've used it several times
I ordered the black version size large. I am 6’1” with slender legs. They fit well enough but think a Medium might have been better and provided more compression. I actually have used them less as sun screens but more of a warmer during some “chilly” rides (high 40’s to low 50’s). Not thermal but just enough protection from the chill and wind to keep my legs comfortable. Sunny and over 70 these black ones really got hot. I like the versatility as they are very compact to carry and are very easy to put on or take off as weather conditions change. If using primarily as sun screens I would opt for the white ones. Regarding the zippers mentioned by another reviewer, I had no problem with them and do not effect comfort although I agree they are not really necessary.