Eric Worleywrote a review of Castelli Flanders Warm Long-Sleeve Base Layer - Men's on April 6, 2018
Familiarity: I've used it several times
This has been THE perfect layer to wear under my Giordana AV200 jacket for early spring riding. Feels really good for high intensity at 35-40 degrees and 40-50 degree basemile rides. Typical Castelli sizing. I'm Small in regular clothes but a full on Medium for this baselayer.