The Blundstone All-Terrain Thermal ($265) is the most style-forward boot we’ve tested, with classic Chelsea lines and high-quality leather that looks great around town. But it’s not built for deep winter. The 200-gram insulation is minimal, it sits relatively low for the category (just above the ankle), and traction is below average, even with a Vibram sole. Still, if your winter use is mostly urban and you value convenience and looks over rugged performance, this slip-on boot fits the bill—just know it’s more fashion-forward than function-first.
Warmth
Walking Comfort
Traction
Waterproofing
Durability
Sustainability
Insulation
200g Thinsulate, sheepskin footbed
Boot Height
6 in.
Weight
2 lb. 7 oz.
Waterproof
No
Pros
Cons
Blundstone All-Terrain Thermal
For this season's top models, see our guide to the Best Winter Boots.
With 200-gram Thinsulate insulation and relatively low coverage, the Blundstone All-Terrain Thermal feels more like a lightly winterized casual boot than a true cold-weather workhorse. It’s warmer than a standard Blundstone or uninsulated hiking boot, but still far behind most purpose-built winter models. The cozy sheepskin-lined insole adds a touch of plushness underfoot, but it’s extremely thin and flat, offering minimal insulation or support (I cover this in more detail in Walking Comfort below).
I wore the Blundstone All-Terrain Thermal around Jackson, Wyoming, during late winter. In temps ranging from the high 20s to low 40s, it was perfectly comfortable for errands, walks to the coffee shop, and commuting to the ski hill. But once the mercury dipped lower, I either had to add thick socks or reach for a proper insulated boot like my Dynafit winter booties. Even other 200-gram boots we’ve tested—like the Merrell Thermo Chill—run warmer thanks to taller shafts, burlier uppers, and more coverage. This one’s best for shoulder-season chill or mild winter use, not tromping around in properly frigid conditions.
Comfort is a mixed bag with the All-Terrain Thermal. The leather upper breaks in quickly—just a day or two—and once it softens, it molds nicely to the foot without pressure points. The pull-on Chelsea design also eliminates any lace-related hot spots, adding to the smooth feel up top. And the low 6-inch height makes it feel fairly nimble. But things are less forgiving underfoot.
The outsole is fairly stiff, and the boot includes a steel shank—an unusual choice for a casual winter boot, and one that adds rigidity without offering much benefit for everyday use. The PU midsole is what really boosts long-term durability, but it comes at the expense of cushion. Compared to the EVA midsoles found in most of the winter boots we’ve tested, this one feels firmer and less forgiving. The included fleece-lined insole looks cozy but is thin and flat, with almost no arch support. I swapped it out after just a couple of wears. Totaled up, unless you prefer a firm underfoot feel, the Blundstone will not be as all-day friendly as the other winter boots we’ve tested.
The Vibram outsole is a clear upgrade from the standard Blundstone lineup, but it’s not enough to save the All-Terrain Thermal from ranking near the bottom for winter traction. Despite the brand-name rubber, the outsole has shallow lugs and minimal spacing between them, creating a mostly flat profile with just a few water- or mud-dispersing channels. That design might work in mild rain or on pavement, but it’s ill-suited for snow, ice, or even moderate mud.
I experienced frequent slips while walking on packed-snow sidewalks in Jackson and often had to deliberately step around icy patches. Grip was poor enough that it became a noticeable liability. Compared to almost every other winter boot we’ve tested—including the similarly traction-limited Ugg Butte—this one fares worse on winter terrain. Combined with its stiffness and lack of cushioning, it’s not a boot I’d ever consider for hiking, or really any terrain that isn’t flat and urban.
The Blundtsone All-Terrain Thermal lacks a waterproof membrane, so it isn’t fully waterproof, but the leather upper is impressively water-resistant. I regularly tromped through slush and shallow snow—often right through the puddle outside my apartment—and my feet stayed dry. Water did begin to soak into the leather (rather than bead off) after about a week of use, but it never penetrated the boot. For light winter conditions or around-town wear, it holds up fine. Just don’t expect it to perform in deeper snow or prolonged rain—this isn’t a boot for truly wet or sustained exposure.
The Blundstone All-Terrain Thermal is exceptionally durable thanks to its thick, high-quality leather upper, which resists abrasion and wear with ease. The nearly one-piece construction minimizes seams and relies on sturdy stitching only where necessary, reducing potential failure points. The Vibram outsole and firm PU midsole add to its longevity, and with no laces, eyelets, or waterproof membrane to worry about, there’s little that can break down over time. This is a boot you can wear for years without concern.
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Longevity
Choosing durable outdoor gear and keeping it in use for longer is one of the best ways to reduce environmental impact. Our proprietary longevity rating assesses factors like overall build quality, materials, fabric denier, component durability, and real-world performance. A green check indicates that we expect the product to be long-lasting relative to its peers, a yellow check mark indicates average longevity, and a red X indicates a product that may have a limited lifespan.
Recycled Materials
Recycled materials are prevalent in outdoor gear, with nylon, polyester, wool, and down among the most common, but the composition varies widely. A green check mark indicates the product is made with a substantial amount of recycled materials (100% recycled or the core fabric that makes up most of the product is recycled), a yellow check means it contains a moderate to small amount of recycled materials, while a red X means there are no recycled materials in the product.
PFAS-Free DWR
Durable water-repellent (DWR) finishes can contain PFAS (per- and polyfluoroalkyl substances). These highly persistent “forever chemicals” are used in outdoor gear for their strong resistance to water, oil, and heat, but are linked to environmental contamination and a range of health concerns. A green check mark indicates the product uses a PFAS-free DWR, while a red X means the DWR contains PFAS.
Bluesign Approved
Bluesign Technologies, based in Switzerland, operates a third-party textile management system that ensures materials are manufactured to strict environmental, chemical, and worker safety standards. A green check mark indicates a product is either a Bluesign Product (contains at least 90% Bluesign-approved fabrics and 20-30% Bluesign-approved accessories) or features a significant amount of Bluesign-approved materials. A yellow check mark means it uses some Bluesign-approved materials but less than the aforementioned category, and a red X means there are no Bluesign-approved materials in the product.
Responsible Leather
Responsible leather is typically sourced from suppliers certified by the Leather Working Group (LWG), a third-party nonprofit that evaluates tanneries on factors such as water and energy use, chemical and waste management, emissions, traceability, and worker safety, and assigns ratings ranging from Bronze to Gold. A green check mark indicates a product uses responsibly sourced leather, a yellow check mark indicates the brand sources responsible leather for the majority of its products but does not specify it at the product level, and a red X indicates the product does not use responsibly sourced leather.
Responsible Manufacturing
This criterion evaluates a brand’s commitment to fair wages, safe working conditions, and reducing environmental impact through certifications and programs like Fair Trade Certified, Fair Wear Foundation, Worldwide Responsible Accredited Production (WRAP), and the Fair Labor Association, while also recognizing brands that manufacture primarily in the U.S. or Europe under strict labor and environmental regulations. A green check mark indicates a brand meets our responsible manufacturing criteria, while a red X means it does not.
Recycled and/or Reduced Packaging
Packaging can add significant waste to outdoor gear purchases, so many brands work to reduce its impact by using recycled materials, incorporating Forest Stewardship Council-certified paper products, and minimizing plastic and paper use. A green check mark indicates a brand uses recycled or reduced materials across all of its packaging, a yellow check indicates moderate or limited use of recycled or reduced packaging, and a red X indicates the brand does not make either of these efforts.
Resale and/or Recycling Services
Resale and recycling programs help keep outdoor gear in circulation longer and out of landfills, ranging from trade-in resale platforms that offer store credit to take-back initiatives that recycle products at the end of their usable life. A green check mark indicates a brand offers both resale and recycling programs, a yellow check mark indicates it offers one or the two, and a red X indicates it offers neither.
Carbon Footprint Tracking
This criterion evaluates whether a brand measures, reports, and works to reduce its greenhouse gas emissions using established frameworks such as the Higg Index, Greenhouse Gas Protocol, or The Change Climate Project. A green check mark indicates a brand publicly reports greenhouse gas emissions data, sets clearly defined reduction targets, and uses established tracking frameworks such as Higg or The Change Climate Project. A yellow check mark indicates the brand tracks emissions and outlines reduction goals but provides limited data, lacks science-based verification, or does not clearly report progress. A red X indicates the brand does not appear to track greenhouse gas emissions or provides so little information that its efforts cannot be verified.
Annual Impact Report
Annual impact reports provide transparency and accountability by outlining a brand’s sustainability efforts across areas such as material sourcing, greenhouse gas emissions, waste, water use, supply chains, and packaging. A green check mark indicates a brand publishes a detailed, brand-specific impact report that closely aligns with our sustainability criteria and leaves little room for ambiguity. A yellow check indicates a brand provides some relevant sustainability reporting but lacks detail in key areas or is covered only briefly within a parent company report. A red X indicates a brand does not regularly publish an impact report.
Slip-On Design
As a slip-on boot, the All-Terrain Thermal is far easier to get on and off than most of the lace-up winter boots we’ve tested. The elastic side panels and dual pull tabs at the front and back make it a breeze to slide into, making it an ideal option for quick errands, grabbing the mail, or a short shovel session on the driveway. For grab-and-go convenience, this design is hard to beat.
I wear a men’s 7.5 and tested the Blundtsone All-Terrain Thermal in the same size (marked as an Australia/UK 6.5 on the sole). Compared to my regular, non-thermal Blundstone All-Terrain in the same size, this version felt noticeably looser around the forefoot and ankle. It’s unclear whether this was a sample-specific issue or an intentional design tweak—perhaps to allow room for thicker socks—but I would have sized down a half-size if I’d known.
Ugg Butte ($240): The Bold and (Less) Cold
For folks who want to put their best fashion foot forward, but who also covet more warmth than the All-Terrain provides, check out the Butte. Its styling is more bold than the All-Terrain’s, largely due to the large wool cuff at the top. That look may be divisive, but the fluffy wool also covers the interior of the boot to deliver a large dose of insulation. Add a waterproof lining and rubber toe cap, and you have a model that’s better suited to 25°F winter conditions than the All-Terrain. However, although the lugs on the Butte’s Vibram sole are better spaced than the All-Terrain’s, they still have below-average grip. In colder climates, the Butte is the smarter pick, but barring that, choose whichever one best fits your style. For more, read our Ugg Butte review.
Oboz Bridger 10-Inch Insulated ($220): Winter-Ready Performance, Crunchy Looks
If the All-Terrain’s lack of a high cuff appeals to you but you want to increase winter performance, the Thermo Chill Mid might be the ticket. It’s about as high as the All-Terrain (just above the ankle but below your calf) and also contains 200-gram insulation, but a true waterproof membrane, more nimble silhouette, and deeper lugs make this boot a better choice for heading out on snowy trails. The Thermo Chill is a step up in warmth compared with the All-Terrain, and its laces will let you fine-tune the fit for your adventures—whether hiking or snowshoeing—in a way you can’t with the latter model’s Chelsea boot design. And then, of course, there’s the enormous price difference. The Thermo Chill is half the cost of the All-Terrain, which is a great deal given that it’s a much better boot for actually getting outside during winter. To learn more, see our review of the Bridger 10-Inch Insulated.
Keen Anchorage IV ($175): A Smart $100 Savings
Keen’s Anchorage IV offers a budget-friendly alternative to the classic Blundstone, and there’s a lot to like if your needs skew more practical than stylish. We’ll start with the obvious: the Blundstone’s premium leather and sleeker silhouette give it the clear edge in aesthetics. But the Anchorage fights back with a waterproof membrane (missing from the Blundstone), 200-gram synthetic insulation, and slightly grippier lugs for snow and slush. It’s similarly easy to slip on and off and better suited for shoveling or true winter conditions. Whether the dad-shoe look is a dealbreaker is entirely up to you.
We hate to seem shallow, but the appeal of this boot lies mostly in its looks. The All-Terrain Thermal’s trendy Chelsea boot design will pair well with almost any outfit, and it’s warm enough for casual winter wear. But its off-pavement performance can’t hold a candle to the rest of the category.
Warmth
Walking Comfort
Traction
Waterproofing
Durability
Sustainability
With its folding wool cuff and supremely cozy interior, Ugg’s Butte is at home cruising around a snowy city center. But limitations in support and grip hold it back from being a true all-rounder.
Warmth
Walking Comfort
Traction
Waterproofing
Durability
Sustainability
The Bridger 10-Inch Insulated offers a dialed blend of weather protection, walking comfort, and warmth. Neither too light nor too bulky, it should function well for most of your winter adventures, whether urban- or trail-oriented. It’s not cheap, though, and not everybody likes a cuff this high.
Warmth
Walking Comfort
Traction
Waterproofing
Durability
Sustainability
If you want a winter-ready Chelsea boot with rugged looks and excellent durability, the Blundstone All-Terrain Thermal might be worth a look. It’s not built for deep snow or frigid temperatures, but it works well for mild winter use—quick errands, casual days in light slush, and dry commutes. The slip-on design is super convenient, and the thick leather will hold up for years. Just don’t expect much warmth or traction, and consider swapping the insole for something more supportive. This is more fashion-forward utility than full winter function.
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