We built the Nano Puff Jacket for climbers who needed a weather-resistant, lightweight and packable synthetic insulation layer that could stay warm even when wet and withstand seasons of use. Ever since, those same features have made it the uncontested favorite midlayer for just about any outdoor pursuit. With fit refinements for improved mobility, 60-g PrimaLoft Gold Insulation Eco 100% postconsumer recycled polyester with P.U.R.E. (Produced Using Reduced Emissions) technology, and a 100% recycled polyester shell and lining, this iteration of the Nano Puff reinforces why so many people call this the magic jacket. Made in a Fair Trade Certified factory. Features: 100% Recycled Fabrics - Lightweight 100% recycled polyester ripstop shell has a durable water repellent (DWR) finish made without intentionally added PFAS to shed light moisture. Incredible Warmth to Weight 100% Recycled Insulation - PrimaLoft Gold Insulation Eco 100% postconsumer recycled polyester with P. (Produced Using Reduced Emissions) technology provides excellent warmth for its weight and stays warm when wet. Signature Horizontal Quilting - Brick quilting pattern and horizontal quilted side panels with durable, abrasion-resistant thread stabilize insulation for greater durability as an outer layer and low-profile, low-bulk layering under shells. Evolved Fit for Mobility and Comfort - Improved shoulder fit and elbow articulation for better mobility. Center-Front Zipper - Center-front zipper has a wicking interior storm flap and a zipper garage at the chin for next-to-skin comfort. Pocket Features - Two zippered handwarmer pockets have cleanly finished zipper garages; an internal zippered chest pocket doubles as a stuffsack with a reinforced carabiner clip-in loop.