I love wearing vests or having one in my bag all year long as I'm in and out of different environments and don't know when I might get cold. This is a super lightweight, compact vest and comes with a little bag it stuffs into for travel. Love the pretty blue color and orange lining. This nylon shows any oil (from my skin rubbing on it) pretty easily. Also, this vest runs long. I typically wear a small with Eddie Bauer, but the small was too big, so i got an x-small which is a bit snug in the hips but fits well everywhere else and is more flattering than the small.