Dynafit Men's One PX-TF Ski Boot

Priced: $511.96 - $649.95 Rated:   - 4 stars out of 5 by 7 reviews.
USOutdoor.com (2012) $511.96
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Regularly: $649.95
Oregon Mountain Community $536.74
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Campsaver.com $549.95
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Backcountry.com $549.95
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Christy Sports $639.95
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Berg's Ski Shop $649.95
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Dynafit One PX-TF Ski Boot -
It may not be the One Ring, nor the Chosen One and definitely not the Keanu-Reaves-One, but Dynafit’s One PX-TF ski boot may just be the one you’ve been looking for. Winner of the 2013 Powder Skier’s Choice and Backcountry Gear Guide Select awards, the One PX-TF combines lightweight skinning performance with a three buckle boot that’s tall and stiff enough that it won’t feel lost and out of place at the resort.
The One’s three buckles include both an instep buckle that will hold you foot down without compressing your arch and Dynafit’s Ultra-Lock buckle that tightens the upper cuff and puts you in ski mode with the same motion – smoothing out transitions and preventing those first three powder turns in walk mode. While skinning, the One allows for a full 60 degrees of range and the wider last increases warmth and comfort. The Dynafit One PX-TF ski boot comes with Tech inserts and a grippy Dynafit Pro Sole, compatible with all touring bindings. The One comes with Dynafit’s laceable heat moldable TF Universal Liner for individualized fit and comfort.

Lining and Layers:

  • Layer of expanded PU insulation glued into the shell adds comfort for the colder days in the mountains


  • Injection-molded Pebax cuff and shell yield lightweight, stiff performance with a thin shell and minimal materials

Support and Cushioning:

  • Thermo-moldable TF liner provides a warm, flexible, and cushioned interface between your foot and boot


  • Central Buckle System locks down your heel and creates a stiff structure for both the uphill and downhill sections

Weather and Wind:

  • Flex Tongue Design keeps snow out and doesn't rub during long skins, it also joins to the shell with rivets to improve rigidity

Traction and Grip:

  • Short, curved Dynafit Pro sole features large, sticky rubber lugs that grip icy bootpacks and help to secure your kick turns


  • Wider last than most Dynafit models provides enhanced comfort for your forefoot during climbs and long tours


  • Ultra-Lock System loosens the cuff into walk-hike mode with one flick of a buckle, while its buckle cable retention system prevents unwanted release
  • Thermoformable liner
  • Driving Spoiler slides into the cuff to provide up to 60 degrees of uphill rotation while preventing interior friction and blistering
  • Ultra lock system with a magnesium cuff buckle that lets you open and close the buckle easily and change between walk and ski mode
  • Driving Spoiler also adds a stiff structure for the downhill laps and adjusts your forward lean angle between 15 and 18 degrees
  • Compatible with Dynafit Quick-Step-In binding systems (sold separately)
  • Medium-stiff shell provides solid downhill performance without making the uphill journey torturous
  • Flex tongue for smooth pressure application that doesn't restrict the 60° cuff rotation
Christy Sports

Dynafit One PX TF Ski Boot:   The ONE boot line combines the features of Dynafit’s lightweight TLT 5 boots with the features of the Vulcan/Mercury big-mountain boots: downhill performance with 60 degree cuff rotation for skinning back up. One boots also feature a Thermoformable liner, Pebax shell, Ultra lock buckle system, rockered sole and central buckle system for maximum heel retention. Weight 1490 g (size 27.5)

Berg's Ski Shop
This boot features several attributes of the TLT5, adapted to a wide range of customers. Compared to the TLT6, the ONE PX is a bit wider, warmer, stiffer (in ski mode) and more adjustable thanks to 3 buckles. The ONE PX is the perfect choice for ski tourers looking for the lightest and best performing ski boot in this category. Notable features include: a cuff with the widest and smoothest cuff ro- tation possible on the ski touring category; a new articulated cuff buckle ULTRA LOCK SYSTEM 2.0, which, when compared to the previous version, reduces lateral snag, unhampering the transition from SKI to WALK mode and reverse; a short rockered sole (only 304mm for 27.5); the central buckle system (45°) for maximum heel retention and superior downhill performance; a 3mm polyethylene layer provides adequate insulation. Thanks to the BUCKLE RETENTION SYSTEM, the tension of every buckle cable is guaranteed while walking. The sole is compatible with Dynafit bindings and all other touring bindings on the market. The ONE PX offers a newly developed TF – thermoformable liner with unbeatable fit, warmth and performance.
Oregon Mountain Community
The walk-friendly, fore-aft, 60° cuff rotation of the old TLT5 is featured in the Dynafit One PX-TF Alpine Touring boot. But as opposed to the more spartan TLT5, the One PX is more comfortable, easier to use, warmer, taller, cheaper and more supportive. And, importantly, pushes skis around better when charging down a bowl, couloir or tree shot, even on wide skis.


The One PX - TF boot from Dynafit is the perfect choice for all ski tourers looking for the lightest and best performing boot in its category. Its unique features are the Ultra lock buckle system for one movement cuff closure and ski to walk mode change, a short and rockered sole, and the central buckle system for maximum heel retention and superior downhill performance. It is compatible with Dynafit bindings and all other touring bindings in the market.


The One PX - TF Alpine Touring Boot takes Dynafit's swift, lightweight performance and adds a roomier fit, extra insulation, and beefed-up support for the average AT powder seeker. Long, rewarding backcountry laps become the norm once you feel this boot's balanced mix of comfort and lightweight materials. On the uphill, you can achieve 60 degrees of rotation for long, efficient strides while the rockered, sticky Dynafit Pro outsole secures your advance on the skin track or boot pack. Once you click into downhill mode, its Central Buckle System locks down your heel and an adjustable Driving Spoiler creates a super-stiff structure for skiing all types of snow and terrain.

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Average Price History: Price History
Review RatingNumber of Reviews
Also available for: Women
Binding Compatibility:Tech (Dynafit)
Buckles:3 Buckle
Cuff:60° rotation
Flex Adjustment:15°- 18° and release mode for walking/skinning
Forward Lean:15-18 Degrees
Last Width:103mm
Liner:Dynafit TF Liner
Number of Buckles:3 buckles and a Velcro power strap
Shell Material:Light but stiff Pebax® constructiion
Sole:Quick Step In Instert
Weight:6 lb 8 oz / 2980 g (pair)
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Dynafit One PX-TF Ski Boot Reviews:

Positive Reviews:

OK- cheesy- but it really is. I converted to the TLT-5s last year and loved them. However- they weren't quite as stiff as I would have liked for some skiing out here in the east. These boots dial it pretty much just right- they have %80 of the touring ability as the TLT-5s with I'd say 30-40% more stiffness.
I still use the TLT-5s for pretending I'm a lycra clad rando racer but for the rest of the time I use these boots and find that they allow me to do more on the downhill. They also have never given me blisters. I've had problems with BD boots in the past that were properly sized and molded but still gave blisters if they weren't tightened in touring mode. I just did some long days with these boots into the 10th mtn huts and my feet were the one of the only ones in the group that didn't look like they'd been through a pencil grinder.
My only complaint is that they are actually surprisingly cold. I find my TLT-5s are warmer (strange- I know) but I have warm feet so this isn't a deal breaker.
I use them on 176 BD Drifts and 176 BD Stigmas with Dynafit TLT Radicals and Dynafit TLT Speed Radicals. I've got average feet, 27.5, and weigh 165 at 5'11''. I'd say an advanced skier but not a cliff hucker.
+: Stiff, comfy on long tours, amazing touring mode, love the soles for hiking around the hard granite of the White Mountains
-: Strangely seem a little cold, wish there was a little more rocker in the forefoot for walking (though understand this would make them not compatible with Fritschis so I guess worth it).

lbene at Backcountry.com on 04/07/2013

I finally had chance to use my new One PX boots today at Solitude; I'm very happy with how they drive my Drift 176 skis. We had ~8" of fresh powder today. The jury is still out WRT deeper and steeper but so far I have to say the One PX is a keeper. The only problem I had was with pre-release due to ice build up in the toe fitting. I'm using Radical ST bindings. Instructions say rotate the toe several times after clamping in to clear the ice but it doesn't work. I plan to start carrying a pick to clear the toe holes.

brup86673 at Backcountry.com on 12/09/2012

This is a great touring boot for those looking for a little more on the way down. I split them with my Dad, and we are both very happy with them. He has a wider foot (Size 11) and went with the 28.5. I dont have any experience with other Dynafit boots, so take it for what its worth. We have these paired with Dynafit Stokes 191 and they are very light! We are both around 6ft.

Blake Carley at Backcountry.com on 05/05/2013

Great fit, great price & great performance. Extremely comfortable forefoot, but also a very secure heel fit. No blisters or black toenails! I've been skiing in Garmonts for years and this boot fits me much better. I ski 105-110mm skis in the Wasatch and the performance is superb. Really don't need any beefier of a boot, even when skiing in resort. The single upper cuff buckle is very simple and functional.

James Hicks at Backcountry.com on 12/23/2013

One of my favorite current production boots. No issues with the liner. I get a really good fit and easy to mold. Love the progressive flex of this boot and up right stance. Great tour mode. Solid enough to ski 115mm under foot. This is the sleeper in the Dynafit line. Only a TLT or full race boot going to hike/skin as well

Dane at Backcountry.com on 11/04/2013

Previous comments are all spot on. The only question I would have is the spoiler on my pair is not adjustable as it is riveted in place, but then again maybe I'm missing something here. I'd also agree with the flex rating the previous poster provided. These boots have performed as described.

Daniel Brown at Backcountry.com on 01/31/2013

Negative Reviews:

I cant believe Dynafit would make such a great shell and ruin it with such a terrible liner. Across the board when trying to sell this boot people trying them on winced in pain when using the Dynafit Stock liner, and then saw butterflies and unicorns when using my Intuition liner that I had to buy separately to make this boot work. Dynafit 60 degrees of cuff rotation is awesome but make a better liner, do not make your customer buy something after market right off the bat. In Europe you cannot even buy Dynafit boots with their liner, boot fitters will not sell them to you because they are so bad.

Bill Porreca at Backcountry.com on 08/15/2013