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The streamlined 850 Down Sleeping Bag has a minimalist-minded design and a feature set that’s ideal for climbers, kayakers and backpackers who need an essentials-only kit.
The streamlined 850 Down Sleeping Bag has a minimalist-minded design and a feature set that’s ideal for climbers, kayakers and backpackers who need an essentials-only kit. We started with ultralight 100% nylon ripstop Pertex Quantum® fabric, which is windproof, downproof and features Y-shaped filament technology to create a shell that’s nearly half the weight and twice the strength of our other down shell fabrics. The interlocking Y-shaped fibers of this fabric allow maximum down loft, provide superior durability and enhance the performance of the DWR (durable water repellent) finish. We made the liner from our beloved Houdini® fabric—a downproof, featherweight 100% nylon ripstop that provides quick dry times and soft, next-to-skin comfort. The simple, lightweight stitch-through baffle construction reduces weight and increases stuffability. We insulated the bag with 850-fill-power Advanced Global Traceable Down for exceptional heat-trapping warmth, season after season durability, ultracompressibility and light weight. Our low-profile hood is designed to move with you and minimize twisting; it fits securely around your shoulders and head with lightweight cording and concealed cord locks. The custom stitch-through foot box maximizes warmth and allows ample room for movement.
Features
Ultralight 100% nylon ripstop Pertex Quantum® fabric, which features Y-shaped filament technology to create a shell that’s nearly half the weight and twice the strength of our other down shell fabrics
Liner is made from our beloved Houdini® fabric—a featherweight 100% nylon ripstop that provides quick dry times and soft, next-to-skin comfort
For exceptional heat-trapping warmth, season after season durability and ultracompressibility, it’s insulated with 850-fill-power Advanced Global Traceable Down (goose down certified by NSF International from parent farm to apparel factory to help ensure that the birds that supply it are not force-fed or live-plucked)
Lightweight stitch-through baffle construction reduces weight and increases stuffability
Low-profile hood is designed to move with you and minimize twisting; it fits securely around your shoulders and head with lightweight cording and concealed cord locks
Custom stitch-through foot box maximizes warmth and allows ample room for movement
When packing, there’s an ultralight stuffsack made from our Houdini fabric (1.2-oz 100% nylon ripstop). For long-term storage, a larger drawstring bag (made of a 55% hemp/45% organic cotton blend) is included
Materials
Shell: 0.85-oz 15-denier 100% nylon ripstop Pertex Quantum® built with Y-shaped filament technology; with a DWR (durable water repellent) finish. Fabric is certified as bluesign® approved. Liner and stuffsack: 1.2-oz 15-denier 100% nylon ripstop with a DWR (durable water repellent) finish. Insulation: 850-fill-power Advanced Global Traceable Down (goose down certified by NSF International from parent farm to apparel factory to help ensure that the birds that supply it are not force-fed or live-plucked). Storage bag: 4-oz 55% hemp/45% organic cotton muslin
All Patagonia virgin down is certified to the Advanced Global Traceable Down standard by NSF International. The Advanced certification level means our down suppliers conducted audits all the way back to the parent farms to ensure there was no live-plucking and that broader humane animal welfare standards were faithfully observed throughout the supply chain.
Patagonia has worked with bluesign technologies since 2000 to evaluate and reduce resource consumption in our materials supply chain, and to assist us with managing the chemicals, dyes and finishes used in the process. bluesign technologies, based in Switzerland, works at each step in the textile supply chain to approve chemicals, processes, materials, and products that are safe for the environment, safe for workers, and safe for the end customers.
In 2007, Patagonia became the first brand to officially join the network of bluesign® system partners.
Any fabric you see that’s bluesign® approved offers the highest level of consumer safety by employing methods and materials in their manufacture that conserve resources and minimize impacts on people and the environment.
| Size | One Size | Small/Medium | Large/X-Large |
| Adult Head Circumference |
21.75"-24" |
21.75"-22.75" |
22.75"-24" |
| Women's |
21.25"-23.25" |
- |
- |
Measurements refer to body size, not garment dimensions, and are in inches, unless otherwise noted.
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.
