Vivian - the sleeves are bracelet length, AND puffy, so not great under a sweater or jacket. Of course it could be done, because the fabric is SO lightweight, but they might be creased afterward? I *did* pop my utility jacket over top for a few minutes in the rain though and it was fine though. The sizing is TTS - this is a Medium.
Shevia - that kind of temperature swing is called "welcome to the Prairies". Lol!
Bijou - I'm hoping you're just kidding. ?