The Endura Alltrack Roam Fleece Jersey backs a breathable outer fabric with textured fleece, giving cold rides a real thermal layer instead of just another base layer doing double duty. The Roam Fit sits loose through the body, so it layers easily under a shell without binding at the shoulders or restricting the reach on the bars. What Our Gearhead(R) Experts Are Saying:"I wore this under a shell on a ride that started near freezing, and the fleece backing held onto warmth through the whole climb instead of going cold and clammy the second I started sweating. That's the difference between a midlayer that's just soft and one that's actually doing the job."