If you have only one pullover for the rest of eternity, consider the Patagonia
Nano Puff Pullover Jacket. The Nano blocks wind, sheds snow and traps heat – BOOM! Made with PrimaLoft® One Insulation (60-g) this jacket is incredibly warm, compresses to near nothing and its hydrophobic to boot. A half zip closure avoids bulk and helps to minimize total weight. Wear the Nano Puff as an outer or midlayer for optimal comfort.
Shell - 1-oz 15-denier 100% Recycled polyester
Ultralight ripstop recycled polyester shell fabric has a Deluge DWR finish
Lightweight 60-g PrimaLoft One insulation provides excellent warmth and compressibility
PrimaLoft® - The human body uses energy to keep warm. PrimaLoft® uses a patented microfiber structure to help the body retain warmth and conserve energy.
Lining - 1.4-oz 22-denier 100% Recycled polyester. Shell and lining have a Deluge® DWR (durable water repellent) finish
Self Storage - Stuffs into zippered self-storage chest pocket with a reinforced carabiner clip-in loop
Elasticized cuffs and hem seal out wind