Updated:
Jan 19, 2025Warmth
Weight & Packability
Comfort
Durability
Weather Resistance
Sustainability
Weight
1 lb. 1.7 oz.
Insulation
4.3 oz. of 700-fill down
Fabric
20D stretch nylon
Packable
No
Pros
Cons
Mountain Hardwear Stretchdown Hoody
The Stretchdown Hoody delivers exceptional warmth and kept me reliably warm into the high 20s Fahrenheit. Its 4.6 ounces of 700-fill down (about average for the lightweight down jacket category) proved toasty on multiple camping trips as the night turned chilly. On a spring ski tour up Middle Sister in Oregon, it provided sufficient warmth during breaks and transitions with just a sun hoody underneath and a softshell overtop. The jacket even excelled in windy conditions at the summit—the substantial face fabric serves as a reliable barrier against gusts, and the elastic cuffs, hem adjusters, and elastic around the hood effectively sealed in warmth.
The Stretchdown’s warmth is on par with other lightweight down jackets such as the Norrøna Falketind Down750, Stio Pinion Down Hooded, and Outdoor Research Helium Down. Compared to the Patagonia Down Sweater, which is the standard-bearer in this category, it features less and lower quality down fill (4.6 oz. of 700-fill down vs. 5.3 oz. of 800-fill down), although the drop in warmth is barely noticeable. The Stretchdown Hoody’s substantial face fabric adds a weighted feel to the jacket, making it one of the first I reach for in around-freezing temperatures.
The Stretchdown Hoody weighs 1 pound 1.7 ounces for a men’s medium, placing it on the heavier end of the spectrum for lightweight down jackets. By contrast, the Patagonia Down Sweater Hoody checks in at 14.8 ounces and offers slightly more warmth. As a result of its weight, the Stretchdown Hoody wouldn’t be my down jacket of choice for weight-conscious activities like backpacking and multi-pitch rock climbing. That said, it doesn’t weigh heavy on the shoulders and still maintains the airy, lofty feel of a down jacket.
Unsurprisingly, the Stretchdown doesn't pack down as compactly as some other jackets, such as the Rab Mythic G with its 1,000-fill down, or even the 800-fill Arc'teryx Cerium (read our Cerium review). It also lacks a dedicated stuff sack, which might be a drawback for those prioritizing packability. We don’t recommend it for space-conscious activities, but it still fits into a youth football-sized bundle that’s manageable for travel and casual backcountry trips.
The Mountain Hardwear Stretchdown Hoody is the coziest technical down puffy I have ever worn. This is in large part due to the shell and liner fabrics, which are stretchy (13% elastane), soft, and highly mobile. The material is thicker and more sweatshirt-like than the typical smooth, slippery feel of down jackets such as the Stio Pinion or Patagonia Down Sweater, and is uber-comfortable next to the skin. In fact, the Stretchdown is so cozy and supple that I often wear it around the house instead of my normal cotton hoodies.
Designed with a robust shell fabric, the Mountain Hardwear Stretchdown feels exceptionally well-built. It can withstand rough use—I’ve worn it while carrying countless armfuls of firewood and scraping against rocks and bushes while hiking and it has yet to gather any significant abrasions. The 20-denier nylon and elastane mix feels burlier than the thin shells found on most down jackets (the Pinion and Down Sweater are also 20D, but they don’t match the Stretchdown’s rugged feel). I did have a small issue with the two-way front zipper: It was initially quite finicky to get started, but did improve with use.
Unsurprisingly for a lightweight down jacket, the Stretchdown’s water resistance is not particularly reliable. Its durable water-resistant finish works to fend off light moisture, but heavy rain will quickly absorb into the shell fabric. And unlike many down jackets, the Stretchdown does not use hydrophobic down or feature any synthetic insulation in exposed areas. Where the jacket does excel is in blustery conditions, where the substantial shell fabric offers a better defense against the elements than thinner, wispier materials.
Select icon to view details:
Longevity
Choosing durable outdoor gear is perhaps the most effective way to reduce environmental impact—the longer it lasts, the less it needs to be produced. Our proprietary longevity rating evaluates overall build quality based on factors such as materials, fabric denier, component durability (including zippers and toggles), real-world performance as reported by our field testers, and our experiences with the brand.
Responsible Down Standard
The down used in this product is certified to the Responsible Down Standard (RDS). Set by The Textile Exchange, the RDS is the leading certification for sustainably sourced down in the outdoor industry. It ensures that down suppliers use sustainable land management practices, prioritize animal welfare, and provide workers with safe working conditions and fair wages. Third-party audits are conducted at all stages of the supply chain, starting with the farm supplying the down.
Recycled Materials
This product is made partly or entirely from recycled materials, the most common being nylon, polyester, wool, and down. Some products include a single recycled component or partially recycled fabric, while others are 100% recycled (generally excluding accessories like zippers, Velcro, toggles, etc). Look for these details in our product sustainability report linked below.
Bluesign Approved
Bluesign Technologies, based in Switzerland, operates a third-party textile certification system that ensures materials are manufactured to strict environmental, chemical, and worker safety standards. A Bluesign-approved material indicates that it has undergone a rigorous vetting process based on the criteria above. A Bluesign Product goes the next mile, containing at least 90% Bluesign-approved fabrics and at least 30% Bluesign-approved accessories.
Responsible Manufacturing
This criterion evaluates this brand's commitment to fair wages, safe working conditions, and reducing its environmental impact throughout the production process. Responsible manufacturing is most commonly demonstrated through certifications and membership in programs such as Fair Trade Certified, Fair Wear Foundation, Worldwide Responsible Accreditation of Production, and the Fair Labor Association. We also recognize brands that prioritize local production, such as those that manufacture primarily in the United States or Europe, to reduce carbon emissions, maintain better oversight of working conditions, and comply with strict social and environmental regulations.
Recycled and/or Reduced Packaging
This brand uses recycled packaging and/or is making efforts to reduce packaging altogether. For example, it may use a certain percentage of recycled cardboard or make efforts to use less plastic across its packaging operation. In some cases, brands also use Forest Stewardship Council-certified paper products, which helps to ensure sustainable sourcing of forest materials.
Repair Services
This brand offers repair services, which can extend this product's lifespan and reduce overall consumption. Some brands offer comprehensive repair programs that can fix a wide range of issues, while others have more limited capabilities. If a brand's warranty policy only covers replacement, rather than repair, these programs usually do not meet this criterion.
Resale and/or Recycling Services
This brand has a resale and/or recycling program, which helps keep gear in circulation for longer and out of landfills. The most common form is a trade-in program, where consumers can exchange items for store credit, which is then resold. Some brands accept products back for recycling at the end of their life, thereby reducing waste. Occasionally, some do both.
Carbon Footprint Tracking
This criterion evaluates whether this brand measures its greenhouse gas emissions, along with its commitment to reduction and transparency in reporting. Typically, we require brands to follow established frameworks such as the Higg Index, Greenhouse Gas Protocol, or The Change Climate Project. Generally, companies use the widely recognized scope categorization system for measuring brand emissions.
Annual Impact Report
This brand produces and publishes an annual impact report for public consumption, tracking its environmental footprint and sustainability efforts. These reports vary in form but generally cover topics such as material sourcing, greenhouse gas and emissions tracking, waste and water usage, supply chain analysis, and packaging efforts. An impact report is an important step toward transparency and accountability on the sustainability front.
Hood
The Stretchdown Hoody’s hood is spacious enough to fit over a climbing helmet (but not a ski helmet) and offers a full field of vision. It’s adjustable at the front with a cinch at each side, which allows the hood to fit snugly around my head and prevents it from covering my face. Although the Stretchdown’s hood adjustments are effective, I still prefer a cinch at the back of the hood—it’s easier to toggle with one hand and makes the hood feel more secure in heavy winds.
Storage
The Stretchdown Hoody features three zippered pockets: two standard hand pockets and one chest pocket. The hand pockets are large enough to fit a beanie or accommodate my hands, even while wearing light gloves. The chest pocket is suitable for a phone, wallet, or headlamp, and includes a hole to thread headphones through. All the zippers are easy to operate with gloves on. Additionally, there is an internal drop-in pocket on the right that can store gloves or a beanie. Notably, none of the pockets double as a stuff sack.
Tester: 5'8" 165 lb.; 39" chest; 33" waist; 18" torso length
Size tested: Men’s medium
I normally wear men’s size medium jackets, and the Stretchdown in a medium felt ever so slightly slimmer than average. The arm and back lengths provide sufficient coverage without restricting movement; however, the jacket did feel a bit tight in the shoulders when I fully extended my arms. Despite the trim fit, the Stretchdown is very puffy and doesn’t function well as a midlayer, particularly underneath my medium-sized rain jackets. More streamlined down jackets like the Mountain Hardwear Ghost Whisperer and Stio Pinion (read our Pinion review) are better options if you want to wear your down jacket under a shell.
Patagonia Down Sweater Hoody ($329): More Versatile for Front and Backcountry Use
Like the Stretchdown, the Patagonia Down Sweater is a stylish jacket that isn’t too technical-looking for casual use close to home. But while the Stretchdown is a bit too heavy and bulky for backcountry applications, the Down Sweater is fully versatile with a packable build (it stuffs into its chest pocket), lower weight (14.8 oz.), and more winter-ready warmth. Of course, you can find more performance-oriented down jackets (like the Arc’teryx Cerium and Rab Mythic G), but the Down Sweater threads the needle for both front and backcountry use better than most. For more, read our review of the Patagonia Down Sweater Hoody.
Fjallraven Expedition Pack Down Hoodie ($280): A Different Kind of Style and Comfort
If you’re shopping with style and comfort in mind, another compelling down jacket is the Fjallraven Expedition Pack Down Hoodie. The Expedition’s construction is also sturdy (Fjallraven does not provide the denier, but it feels thicker than competing models like the Patagonia Down Sweater and Arc’teryx Cerium), and you get that classic Fjallraven polish, including details like leather pull tabs on the hood and an eye-catching logo on the chest. It’s also a noticeably comfortable jacket, although the 100% polyamide shell can’t match the StretchDown’s stretchy and sweatshirt-like feel. But if you’re looking for the look of a traditional down puffy with a bit of extra flair, the Fjallraven is a great option to consider.
A stretch-nylon shell makes this unique down jacket extra durable, comfortable, and a great choice for hard use like camping, cragging, and outdoor work. However, it’s too heavy and bulky to bring too deep into the backcountry.
Warmth
Weight & Packability
Comfort
Durability
Weather Resistance
Sustainability
The Down Sweater is an iconic and versatile down jacket that fits the bill for everyday use and casual backcountry adventures. However, it’s a bit heavier and features a less trim fit than performance jackets of similar warmth.
Warmth
Weight & Packability
Comfort
Durability
Weather Resistance
Sustainability
The Expedition Pack is a classy and durable down jacket from the stylish Sweden-based Fjallraven. The roomy fit, hardwearing face fabric, and fun features make this a go-to for casual backcountry and around-town use. However, it’s heavy, not as warm as we’d like, and omits zipper pulls.
Warmth
Weight & Packability
Comfort
Durability
Weather Resistance
Sustainability
The Mountain Hardwear Stretchdown Hoody is a stellar choice for folks looking for a daily-driver-down jacket that prioritizes comfort and durability over weight and packability. It's versatile enough to wear for casual spring ski tours and fall backpacking trips, but our favorite uses include around-town errands, schlepping wood from the wood pile, and even wearing around the house. We love the soft, quiet sweatshirt-like feel, and the substantial and stretchy shell fabric handles wear and tear better than most lightweight down jackets.
stay comfy in the elements
Gear Guide
Best Down Jackets of 2025Product Ranking
The Most Sustainable Down JacketsEducation
Down vs. Synthetic JacketsSustainability
About Our Sustainability RatingsGear Guide
Best Hiking Shoes of 2025Gear Guide
Best Rain Jackets of 2025