The Men's Retro Pile Fleece Vest from Patagonia is a fairly sewn, warm fleece jacket made from double-sided woven fleece made from recycled polyester, nothing more, but also nothing less. The thick fleece fabric and high collar keep you warm and the three zip pockets with tape pull tabs take care of small items, let in some air thanks to the mesh fabric or warm your hands. The offset shoulder seams are particularly comfortable when wearing a backpack as they prevent pressure points.