Pattagucci is tyrpically my "go to" brand. Always, durable and reliable in high performance environments. The Nano was marked as an athletic cut. As such, I ordered one size larger than usual. Even the larger size felt restrictive under the arms and across the shoulders. As a stand alone outer garment it was less warm than a standard fleece. Don't get me wrong, it meets the high standards of Patagonia but was just not a good fit for a boxer physique.
This review was written in the old system and had content requirements that are different than reviews written today.