Manufacturer's Description refers to the men's version

Windproof, warm, lightweight and highly compressible, the Nano Puff Vest can be worn as a warm layer in cold conditions or as a wind-protection layer during high output activities.

Features:
* Ultralight ripstop recycled polyester shell fabric treated with a Deluge® DWR (durable water repellent) finish
* Synthetic insulation provides excellent warmth and compressibility
* Stuffs into a zippered, secure internal left chest pocket that has a reinforced carabiner clip-in loop
* Two zippered handwarmer pockets, drawcord hem
* Regular fit

Visit Patagonia's Men's Nano Puff Vest page.

Retailers' Descriptions

Here's what other sites are saying:

Windproof and warm, the Patagonia men's Nano Puff vest sports lightweight and very compressible PrimaLoft Gold Eco insulation for excellent comfort-layered under a shell or worn alone.

- REI refers to the men's version

Sometimes shiver-proof protection comes in small packages-like our Nano Puff(R) Vest. It punches above its weight, trapping your heat with 60-g PrimaLoft(R) Gold Insulation Eco-with 55% postconsumer recycled content-wrapped in a windproof and moisture-shedding 100% recycled polyester ripstop shell with a DWR (durable water repellent) finish. The vest has a shaped fit and a soft, wicking interior storm flap and zipper garage for chin comfort. Other fine points include a drawcord hem, two zippered handwarmer pockets and an internal chest pocket (with clip-in loop) that doubles as a stuffsack.

- Patagonia.com refers to the men's version

The Nano Puff Vest from Patagonia allows you to tackle any adventure with an unbeatable amount of style, while keeping you toasty warm. This vest is crafted out of a super tough polyester fabric that possesses 60 grams of Primaloft Gold Insulation to keep you nice and toasty as you go about your day. The Nano Puff Vest features supreme packing abilities, so only storing one jacket in your pack is a thing of the past. PRODUCT FEATURES: Drawcord-adjustable drop-tail hem seals in warmth 227 g (8 oz) 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

- Appalachian Outdoors refers to the men's version

Wear it as a mid-layer or wear it on its own; the Patagonia Nano Puff(R) Vest is a classic for a reason. It's windproof and water resistant, and filled with lightweight, compressible yet super warm PrimaLoft(R) Gold Insulation. Once you go Nano Puff(R), you never go back.

- evo refers to the men's version

Specs

men's
Weight 8.6 oz / 244 g
Shell Fabric 1 oz 15-Denier 100% Recycled Polyester, Deluge® DWR Finish
Lining Fabric 1.4 oz 22-Denier 100% Recycled Polyester
Insulation 60-g PrimaLoft® One 100% polyester, Deluge® DWR Finish