I decided that I really wanted a vest with short sleeves (hmmm, maybe that's not a vest) to keep my shoulders warm and cover the jersey-arm warmer gap. So I took a loud yellow cycling jacket (that I hated because it wasn't breathable enough and I get sweaty inside it) and cut it down to short sleeves. Now I love it and I don't get all sweaty inside it. I do wish it had rear pockets because I can't reach my jersey pockets when I wear it. Maybe I should sew on some pockets.