I've worn this shirt several times now. I've also washed it a couple of times, not because of body odor (it works exactly as they claim) but because I'm a klutz and I almost always spill things on myself when cooking. I'm not quite Pigpen, but I'm close. Anyway, the fabric is great. It feels good on your skin. Absolutely no scratchy feeling. I'm in Seattle and it's been a particularly cool spring so the extra sleeve length has been perfect. It's kept me warm without making me feel too stuffy and overheated like a sweater. It washes great. I sized up because I wanted to make sure it was loose and also so that I could wash it without being concerned about shrinkage. Honestly, I don't think I've noticed any shrinking at all. I washed in cool water and dried halfway on the lowest setting. Worked like a charm. It seems like it will hold up well. The proof will be in the pudding as they say...or at least as my grandmother always said.