I use that jacket to commute up here in SF Bay. If I need more than a tshirt/jersey it is very good all the way up to just past heavy drizzle. Being able to remove the sleeves is pretty nice as well. Since it doesn't really get that cold (or warm for that matter here) I wanted something thin, and of all the ones I looked at it was about 8 of 10 on the thin factor. The ones above an 8 cost 2 or 3 times as much.