...rode with this jersey twice so far. An excellent item. Both rides in the temperature zone 7C/45F to 15C/60F, 4 hours, very windy and a little rain and paired with the Castelli nanoflex arm warmers and the Castelli airco short sleeve base performed extremely well. love it and the bad black "stealth" look. ...probably also get the white version later. A very useful and versatile item/the longer arms/longer back are nice touches too. For a snug perfect fit size L works for me / 39in chest and 6ft .