Purchased to provide sun protection and sweat wicking in hot weather. Have found it to be effective and cooling, and will take it on a cycling vacation later this month to region with 100+ F / 37+ C daytime temperatures. Long length in rear is fine by me and not an issue (am 6'1"/190 cm height). Tight fit but not compressive and feels very light. Washes easily and dries quickly. Am using just the lowest of the 3 pockets, would have preferred an horizontal row of three (thus minus 1 star in rating). Material is very stretchy and encases whatever you have in pocket so you really have to stop cycling to get anything out of a pocket. Good and fair value for money as it does what it is intended to do very well. Will likely wear as an underlayer in cooler weather too.
Doc gave me the side eye on state of sun impact on my arms so picked up these. In So Cal summer heat is your constant companion and these have had no ill affect on my riding. Very comfortable and as advertised even have a cooling effect with sweat. Bonus is if get hit by a fog bank provide some protection from the cold. Sizing chart is tricky if you have road bike weenie biceps but still long arms. But I found they stay in place. I am 6'2" and size large does the trick. They are snug on forearms so this helps. Product info says still need some broad based sun screen cause these don't protect UVB B. All in all my arms are looking the better for these. But not all is lost, still have some cyclist tan on the gap between sleeve and glove!
I bought it to wear in hot weather and it does stay cool. I haven't worn it as a base layer yet and that is probably where it will work best. Wearing it as a jersey is a bit strange since the pockets are arranged vertically up the center of the back and not across the lower back like a typical jersey. Also it is VERY long, if i stand to pedal and then sit back down on the saddle I end up sitting on the tail of the shirt. A real problem if you have something in the bottom pocket.....