The Patagonia Men's Reversible Bivy Down Vest is a water-resistant, reversible, insulated down vest with fleece lining that provides an impressive combination of warmth, functionality and durability. Its classic vest design features a front snap-placket and a warm, comfortable down-filled collar to protect your neck. The face side has patch-on, side-entry handwarmer pockets lined with soft microfleece. The reverse side has a patch-on, left-chest zippered pocket made with recycled nylon and side-entry handwarmer pockets with elastic binding. Designed with a drop-tail hem for additional coverage on your backside. Best of all, the hip length provides additional coverage and pairs nicely with a hipbelt or harness.