PinkPilot, I own this jersey/jacket and love love love it. I purchased it to be used as a jacket even though it was described by cannondale as a jersey. Way too thick and heavy for me as a jersey. I went with one size larger so I can wear other jerseys under it comfortably. It says it is rain and wind resisitant, but think more for the front than at the back. The back black panel is more like a heavy spandex type material that allows for breathabitlity. I have not been in the rain as of yet to know how well it works. With the back panel being like a spandexy material, not sure how waterproof it really might be. I might be surprised though. I feel this jacket/jersey is well worth the money (and I am cheap!). I was out in 37 degrees this am with a long sleeve jersey underneath and was comfortable.