Kirb Awrote a review of Castelli Flanders Warm Long-Sleeve Baselayer - Men's on November 2, 2019
Familiarity: I've put it through the wringer
This is a very good base layer. Keeps me warm for most of my ride. However, for high-intensity rides or on rides with significant climbing, it leaves me a little chilly on the back half. Maybe the thickness? My Craft long sleeve base layer is much thinner and just as warm.