I've not been caught in a downpour yet but the jacket seems well-made and is nice and light versus other (3-ply) waterproof membrane jackets.

One item to note, there is no way the hood on this cycling jacket could ever fit over any cycling helmet, regardless of head or helmet size. It might be nice to slip over your head when you stop cycling but you can't wear the hood and your cycling helmet at the same time.

Jacket fits true-to-size, I think. I'm 5'10" tall and 160 lbs. Usually I find arm lengths to be an inch or so short on standard sizing but the M fits me well through the shoulders and arms.