
This jacket finally delivers the two key features essential in a cold weather outer shell: it blocks the wind from excessively cooling the skin while simultaneously letting moisture escape. There are plenty of jackets available but this is my first choice for temperature ranges between 35 and 50.
Fit is typical Costello: aero race for cycling bodies. This doesn't leave a lot of room for multiple layers required in colder temperatures.
Length is just right and sleeves are long, but let you tuck them inside gloves without leaving a gap .
I've used mine several times now and it is now a favorite. Not cheap, but worth it if you're riding frequently in cold, dry conditions.