Fabric and fit updates are all it took for the popular R1 line to reach a whole new level of comfort and performance.

I am thoroughly familiar with the previous iteration; if you don't believe me, read my Patagonia R1 Air Fleece Crew review.

A fleece jacket or pullover has been the essential hiking ... The first big jump came with the introduction of “tech fleeces” like Polartec Powergrid in the 1990s that transformed the fleece ...