W’s S, synthetic insulation jacket in borealis jean Packable insulator designed for trekking and commuting Thermolite insulation is light, stretchy, and breathable Water-resistant shell stretches for freedom of movement Moisture-wicking lining dries quickly when you work up a sweat mDori bioSoft and HelQ odor control treatments enhance comfort Stretch bindings at hem and cuffs ensure a solid fit Jacket packs into the front left hand pocket for compact storage Responsible Collection Bluesign Approved, Recycled/Repurposed Material 91% recycled polyester, 9% spandex, DWR [lining] 100% recycled polyester Insulation FullRange (60g, 60% polyester, 40% recycled polyester) Fit regular Length hip Center Back Length [small] 26.5in Pockets 2 zippered hand Claimed Weight 13.9oz Activity backpacking, casual, hiking Manufacturer Warranty lifetime Patagonia's Pack In Jacket packs in its pocket so you can take it on brisk commutes around town and weekend backpacking trips. It's a synthetic insulator that breathes, wicks moisture, and dries quickly to keep comfy when you're staying active on bicycles or in hiking shoes. The stretchy shell is water-resistant to shed light rainfall. Patagonia treated the lining with odor control and extra softness.