This is the 5th one of these shirts I have bought. I can't handle the summer heat but these shirts help. There is almost nothing too them so light and breathable. I made the mistake of putting a different shirt on after wearing these for on a few hot days and I was cooking. I crashed on my mountain bike wearing one and I thought it would be in tatters but it was just me that was ripped up. Shirt was fine. My wife also loves hers.