Oboz Bridger 10″ Insulated 400g Winter Hiking Boot Review

The Oboz Bridger 10″ is a waterproof and insulated winter hiking boot with 400-gram Thinsulate insulation, making it suitable for extreme cold weather. Oboz doesn’t publish a temperature rating for them, but they’re comparable to other 400-gram insulated winter hiking boots (rated to -40F) in terms of warmth. I’ve been winter hiking in these boots in the high peaks of New Hampshire and Vermont since 2015. I’ve just broken in my third pair for hiking this winter, after my last pair bit the dust last spring, when the snow melted.

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• Gender: men’s (women’s model is called the Bridger 9″)
• Insulation: 400g Thinsulate (rated to approx -40F)
• Waterproof/breathable: Yes
• Uppers: Leather Nubuck
• Wide sizes: Yes
• Shank: Nylon
• Gaiter ring: Yes
• Break-in time: Virtually none
• Weight Per Pair: 3 lbs. 8 oz. (men’s size 10.5)

The Bridger 10″ has thick nubuck leather uppers and a beefy, rubber front toe kick providing your toes with ample protection when wearing snowshoes, crampons, or microspikes. The tongue is gusseted to prevent water from leaking into the boot if you step into a deep puddle, and there’s a front gaiter ring at the base of the laces. The back of the boot features a rigid heel cup for excellent stability and a narrow, protruding “shelf” to capture a rear snowshoe strap so it doesn’t slip off. It’s priceless for keeping the boots in the snowshoe binding.

The upper part of the boot extends well above the ankle and covers the bottom half of your calf. This keeps your feet and lower legs much warmer than ankle-high cuffs on other, less-insulated boots. It also requires a slightly different gait, propelled more by your shins than by your ankles, because your ankles have much less range of motion in a taller boot. Despite the difference, it’s not hard to get used to walking with the Bridgers, and you might not even notice any difference compared to regular hiking boots.

I’ve tried a lot of different winter hiking boots, but the Bridger is one of the easiest to hike in. Unlike the Bridgers, many 400-gram insulated winter hiking boots feel like cinder blocks on the trail, and they look like them, too. The Bridger 10″ is much more agile because it’s curved and molded like a shoe, with a distinct forefoot, heel, arch, and gently rockered sole. The difference is quite noticeable when fancy footwork is required, such as traction-assisted scrambles up sloped rock faces and ledges, where nuanced boot placements are required.

While the sole does flex some, it’s pretty stiff, which is beneficial when hiking with microspikes, crampons, or snowshoes. The toe box is also robust enough to resist compression by the elastomer straps on lightweight traction like Microspikes or Hillsound Trail Crampons. This can be a real problem with softer boots and can lead to cold or cramped toes, as the compression restricts the blood flow needed to keep them warm.

In terms of sizing, the Bridger 10″ boots run slightly narrow but true to size. Oboz says that the heel is a size “C” width, which is indeed narrow, while the toe box is a regular size “D” width.  Regardless, the Bridger 10″ is also available in wide sizes, and those are available if you need more foot room.

The Bridger 10″ comes with a wool-covered insole that is coated on the bottom with reflective mylar. The insole is sculpted to cup your heel and has a small shock-absorbing pad underneath. It provides good arch support and is a superior insole as manufacturer insoles go. REI even sells them as a standalone thermal insole, side-by-side with insoles from Superfeet and Sole. You can replace them, of course, but the wool insoles make the boot noticeably warmer and help reduce odors.

The Bridger 10″ has an aggressive exterior sole with big lugs that provide excellent traction on snow and off. The lugs run up the sides of the sole a bit, making them good for scrambling on loose gravel or open ledge. If you’ve owned Oboz trail shoes or boots, then you’re probably familiar with the Granite Peak outsole used on the Bridger 10″, since it’s also found on many of Oboz’s other hiking shoes. The sole also features a nylon shank for very firm heel support, a TPU chassis to absorb shocks, and a high arch for compatibility with gaiter straps.

Of course, you’ll still need microspikes or snowshoes for traction when snow and ice make the scene, but the sole provides excellent traction on packed trails by itself. I try to hike as far as possible without any traction aids, because snowshoes and traction aids are heavy, and you’ll fatigue less if you keep them on your pack when they’re unnecessary. That can make a big difference on extreme winter hikes that last 8 hours or more.

The lacing system uses a combination of fabric loops, metal eyes, and speed hooks near the top collar. The boots come with round laces that are a bit short. If you decide to replace them, check out Ironlace Round Bootlaces. They’re so tough to break, they’ll probably outlast your boots.

The outside of the Bridger 10″ is coated with DWR, which rubs off pretty quickly because snow and ice are so abrasive. If you ask the manufacturer, they’ll tell you to retreat the exterior leather with Nikwax DWR to restore the water repellency and maintain the boots’ “breathability.” I put that in quotes because, in my experience, insulated, waterproof/breathable winter hiking boots have never been breathable, even with waterproof/breathable linings.

I recommend sealing the exterior with SnoSeal, a waterproofing beeswax that penetrates the leather and provides much longer-lasting protection. Despite what SnoSeal claims, the boots won’t be breathable once applied (I’ve confirmed this with SnoSeal). I melt it with a blow dryer so it soaks deeply into the leather and boot seams. It works great. Do it once a year, and your boots will never get soaked through. It will darken the leather, though, so make sure that’s what you want because there’s no going back once it’s applied.

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Recommendation

The Oboz Bridger 10″ is a comfortable and warm winter boot with 400 gram Thinsulate insulation and excellent traction. The high cuffs provide excellent ankle support and help seal in heat, while the boot’s sturdy leather uppers offer protection and durability. The aggressive Granite Peak lugged sole is identical to that used on many of Oboz’s other boots and shoes and is equally capable in snow and slush. If you already use Oboz boots or shoes and love the way they fit, then getting the Bridger 10/Bridger 9 is probably a no-brainer. If you’ve never tried an Oboz boot, these are great cold-weather hikers, well-built, and with plenty of protection to keep your feet warm and happy on long, all-day hikes and snowshoeing trips. The Oboz Bridger 9″ is the women’s version of this 400-gram insulated hiking boot.

Oboz has assured me that the 400g 10″ and 9″ Bridgers will still be in the product line next year, but these boots sell out fast, so if you plan to hike this winter, you should grab a pair now.

Disclosure: The author purchased these boots.