Measurements refer to body size, not garment dimensions, and are in inches, unless otherwise noted.
Men's Fit Guide
Though each Patagonia® product is designed and shaped specifically for its intended use, we can generalize our fit descriptions in four ways:
Formfitting: Conforms to the body’s contours.
Slim Fit: Closer-fitting. Slim-fitting technical garments may be worn over baselayers and light midlayers.
Regular Fit: Neither slim nor oversized. Regular-fitting technical garments may be worn over heavier midlayers.
Relaxed Fit: Drapes loosely on the body.
Warm, windproof, water-resistant—the Nano Puff® Bivy Pullover uses warm, incredibly lightweight and highly compressible 60-g PrimaLoft® Gold Insulation Eco with 55% postconsumer recycled content, wrapped in a 100% recycled polyester Pertex Quantum® Eco shell and liner. Going light can work wonders, and a little security can stoke the fire when ambition outpaces the setting sun. For stuck-in-the-dark belays and minimalist bivouacs, our updated Nano Puff® Bivy Pullover is light, windproof, warm and has the pared-down features that help shift the odds in your favor. The water-repellent, compressible 60-g PrimaLoft® Gold Insulation Eco—now with 55% postconsumer recycled content, and still the most thermally efficient synthetic insulation available—has a superb warmth-to-weight ratio and maintains 98% of its warmth, even when wet. The interlocking fibers of the lightweight, 100% recycled polyester Pertex Quantum® Eco shell and liner fabrics block wind, shed moisture and enhance the DWR (durable water repellent) performance. When the going gets cold(er), the kangaroo-style handwarmer pocket and a close-fitting, under-helmet hood with elastic binding bumps up the comfort level. The zippered drop-in torso pocket doubles as a stuffsack with a reinforced carabiner clip-in loop. With a deep venting center-front zipper, elastic bound cuffs and a drawcord-adjustable hem.
Lightweight, 100% recycled polyester ripstop shell and lining fabric has a DWR (durable water repellent) finish
The most thermally efficient synthetic insulation available now with 55% postconsumer recycled content, 60-g PrimaLoft® Gold Insulation Eco is water-repellent, highly compressible and maintains 98% of warmth, even when wet
Brick quilting pattern with horizontal quilt lines on side panels stabilizes insulation and uses durable thread for abrasion resistance
Venting center-front zipper has wicking interior storm flap and zipper garage at chin for next-to-skin comfort
Kangaroo-style handwarmer pocket and zippered drop-in torso pocket doubles as a stuffsack with a reinforced carabiner clip-in loop
Under-the-helmet hood with elastic binding is warm and simple
Elastic bound cuffs and drawcord-adjustable hem seals in warmth
Shell and lining: 1.4-oz 22-denier 100% recycled polyester with a DWR (durable water repellent) finish. Insulation: 60-g PrimaLoft® Gold Insulation Eco 100% polyester (55% postconsumer recycled content). Fabric is certified as bluesign® approved