They built the Nano Puff® Vest 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. Made in a Fair Trade Certified™ factory.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
Signature Horizontal Quilting 
Evolved Fit for Mobility and Comfort 
Center-Front Zipper
Two zippered handwarmer pockets
Made in Vietnam
Shell
1.4-oz 20-denier 100% recycled polyester ripstop with a durable water repellent (DWR) finish made without intentionally added PFAS
Lining
1.3-oz 100% recycled polyester ripstop with a DWR finish made without intentionally added PFAS
Insulation
60-g PrimaLoft® Gold Insulation Eco 100% postconsumer recycled polyester with P.U.R.E.™ (Produced Using Reduced Emissions) technology
Machine Wash Cold, Do Not Bleach, Tumble Dry Low, Do Not Iron