The Core Trisuit is an excellent product. Comfortable and streamlined, no chafing or binding. Only reason why I didn't give it 5* is because of the sizing. I'm 5'8" 180lbs with an athletic build and the size large was waaaaaay too small for me. I could barely zip up past my chest, too tight in the legs. I sized up to an XL and the suit fit me perfectly. I don't wear an XL size in any article of clothing I own and the sizing chart suggested I go with a large based on my measurements. Fortunately, the return/exchange process was very easy. Unless you have a very slender build, go with a size up.