Better For Me In The Cold
- Familiarity: I've put it through the wringer
I bought this Castelli Pro Mesh Baselayer two years ago for its advertised use as a warm weather undershirt, but that just didn't work out. It seemed to me, that the fabric trapped warm air next to your skin in the spaces between the mesh and your jersey and inhibited evaporation and cooling. Thinking that property might be better suited for cold weather, I tried using it as a base layer under various brands of long sleeve undershirts, and it worked great! The pockets in the mesh do trap your body heat under whatever covering you're wearing over it; for instance, a Craft, Castelli or Gore long sleeve undershirt and a Castelli Nelmezzo ROS jersey. That combination keeps me comfortable on the road from the upper 30's to the upper 40's. Below that I use a heavier undershirt over the mesh or put on a warmer winter jacket. For warmer winter temperatures (50-60 degrees), I'm comfortable in a Pro Mesh Baselayer under a lightweight undershirt and a short sleeve jersey with-or-without arm warmers depending on the temperature. For me, the mesh baselayer works so well in the cold that I now base my cold weather layering around it. In warm weather, however, it never sees the light of day.
I'm 5'11' and weigh 165 pounds. A medium fits me as it should, nice and close.