Lets me ride in cooler weather. Under a long sleeve top is where this one really works. I'm 6'2", 185. XL fits perfectly.

Toasty! Need a long sleeve version next!

It is just the right level of warmth that I needed and fits great.

Nice and warm on a cold ride! Paired with the thermal bib pants!

Bought this to go along with my winter bibs and WOW! It's that perfect extra little bit of core insulation on really cold days that takes me from "good enough" to actually comfortable.

My favorite way to wear is to layer it over a super-light long sleeve base layer, and top off with a technical flannel. I've mountain biked down into the 30s with this setup.