Bellwether Ultralite Jacket
Be visible, be safe and be dry! Bellwether's Ultralight Jacket puts a ton of function into an easily packed piece. Its stretchable Gamex fabric repels water effectively while remaining breathable so you can stay comfortable, even in demanding conditions.
I wear this on the way to and from work, and I was just looking for something that would be easy for drivers to see. It's light, small, wind resistant, fits extremely well and is EXTREMELY noticeable. I liked it so much that I purchased a second one just in case anything happened to the first, but despite wearing it four times daily (when weather allows), it has held up extremely well.
Light weight and packs small for your jersey pocket. Close fitting and keeps the wind off. True to size. Does exactly what it is meant to do. Oh, and the yellow is super bright in low light.