“Well-made design with nice features like the vented tail and zipper center pocket. Thicker fabric is versatile by itself or layer with a base layer or an SRX long sleeve jersey underneath. Works for temps 50 to 75 deg F. Snug fit is tight enough without parts flapping at high speeds downhill. Like the lower collar for a LS jersey which is great for hotter rides, or pair with a neck gaiter when it gets colder. 5’-6”, 149 lbs, athletic build and ordered a MED size. Only negative is the sleeves are a 1/2 in too long.”