"Tried this jacket for the first time tonight and over all, I was impressed. The high-vis yellow is brilliant in the dark and makes you very visible to all other traffic and it's wind and waterproofing also works brilliantly. This jacket claims to be breathable however from its performance today, I can't see that it's breathability isn't good at all as when I got home, my compression top was soaking wet from sweat. In teams of sizing, it's not too bad. I purchased a Medium as I am 6ft with long arms! At first I thought it was too short in the body however when out on the road, it's length is perfectly adequate. Im only about a 31 waist meaning it was a little baggy however there was no flapping in the wind whilst on the road. With the addition of some air vents this would be a very good addition to anyones cycling gear and would recommend this to anyone that needs a light-weight jacket and needs to be able to shove it in a jersey pocket!"