I bought the Cool Wings from TE about three weeks ago in anticipation of the local MS150 ride, where I knew I'd be out in the sun pretty much all day long.

I ordered a Small, but quickly returned it for a Medium. (Thank you, TE, for your usual super-fast shipping.) I wear XS or S in most cycling clothes, but decided I'd rather size up and wear something a little less constricting.

That being said, I LOVE them! I definitely stayed cooler wearing the Cool Wings, and because I was wearing a roomier size, I barely noticed the added layer. Great addition to my cycling duds!