Got this earlier in the spring, hoping for something of a windbreaker, but still lightweight, for cooler rides. Not quite as wind-resistant as I'd like, so a base layer along with a jersey or other layer will usually be required. Good quality construction, though, and snug-fitting. I'm 6'0" 156# and slender in upper body, and a size L fits me snugly, close to a "race-fit" especially with layers beneath this jacket. Very "slenderizing", and not a lot of extra room in the arms - if you're muscular, you might want to consider sizing up one or even two sizes, since Castelli's stuff mostly seems to run smaller. Do like the high collar to keep cool winds at bay, and good elastic at the wrists will keep ballooning to a minimum. Mine is the silver/gray colorway, very stylish and classy-looking, and will go with most any color scheme if you're into that. Also rolls-up & packs small into a jersey pocket when not needed, and wrinkling is minimal. NO pockets on back, but should accommodate stuff in jersey pockets beneath OK. Should be easy to keep clean, too.
Being an avid cyclist who rides 100 miles per week and braves the winter months, I aim to have gear that can keep me comfortable in a variety of weather conditions. The Pearl Izumi Men's Attack Tight served me well this year in the in-between spring temperatures, when I need more warmth than shorts provide, but when my winter tights are too hot. I've found that these tights provide enough warmth to keep me comfortable when temperatures fluctuate throughout the day. This is a testament to the tights' ability to regulate my body temperature and prevent overheating. My only complaint is the tights occasionally snag on the saddle when mounting. This is a common issue with many cycling garments, and unfortunately, I have not found an easy solution. However, this issue is not a deal-breaker. I am very satisfied with the performance of the tights and would buy them again.