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Attack high-altitude tours with the lightness and agility of the Dynafit TLT 5 Mountain TF-X Alpine Touring Boot. Mountain-bred details like a rockered sole for hiking and crampon compatibility make this a prime choice for fast ski mountaineering. This boot rocks a thermoformable liner for unparalleled comfort on the descent and a Pebax cuff that maintains a reliable flex in the deep freeze of winter or warm spring shredding. Transition from ski to walk and tackle your next technical ascent with sure-footed speed.

  • The TF-X liner comfortably supports the foot and uses a forefoot flex zone to integrate with the TLT5's 5mm of ACTI-Flex last flexibility for less foot fatigue during marathon skin sessions
  • Claw Outsole uses a durable, rubberized tread that provides ample traction in mixed terrain and plays nicely with crampons
  • Downhill Booster system uses one fixed and one removable tongue that swaps out for uphill hikes, and slides in easily for powerful downhill performance
  • At the catches, the Magnesium Ultra-Lock System locks over the cuff cable so the cuff buckle can be both opened fully and simultaneously secured for easier switching from ski to walk mode
  • Close the Ultra-Lock cuff buckle and an insert on the buckle slides into hole in the rear cuff, locking the two together to create a singular, stiff structure

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Here's what others have to say...

when will the new 13/14 version (tlt 6)...

when will the new 13/14 version (tlt 6) be available?

Best Answer

Hey Seth,

Our ski gear generally begins to trickle in sometime in August, reaching full swing in late Sept/early Oct. Check back closer to the end of summer and we may be able to provide you with a better timeline.

Thanks Lexi! Is there any way to preorder?

Hey Seth!

We have no system in place to set up preorders (I wish, that would be a fantastic feature)! I could keep an eye on it for you if you like! What size were you holding out for?

28.5 mondo.... my current boots (scarpa skookums) are 27.5 but after trying on the TLT 5 Mountain I found that 28.5 would be a better fit, (just a bit tight at my widest point of my forefoot on the pinky toe side...maybe need a punch out?) however with the extra 3mm of space in the new TLT 6's (as per reviews) I'm not 100% sure until I can get my feet in a pair...where can I go to suggest setting up a preorder system? Thanks for your help!

Hey Seth,

You can send the powers that be a quick message from our help page. Just use the link below and file it as a Suggestion/Praise/Complaint.


Remarkable Randonne? Boots

    These seeming feather-light boots far exceeded my expectations. They are very nearly as powerful as down-hill boots and, paired with V�lkl Nunataq skis and Dynafit Radical bindings, let me keep up with skiers that left me in the dust when I was climbing on my BD Crossbows and Scarpa Lasers. They truly make me feel young again! Fit is, of course, dependent on foot shape. Apart from a hot spot caused by the base of one of the tongues that I have yet to solve, these are very comfortable and precise with my Lange-shaped foot.

    Hi all I'm just about to buy a pair of...

    Hi all

    I'm just about to buy a pair of Dynafit TLT5 TF-X ski boots, but can't decide on the sizing of the boots. I have a 280 mm foot length and size 27 mondo on my alpine ski boots.

    Which is the proper size for my foot's length? I've read contradictory opinions on the web and don't want to order them and not to fit. The sizing chart on Dynafit's website is of some help, but still can't decide on the size.

    Thank you

    Best Answer

    I wear a US size 9 or European size 42 and went with the Mondo 27 in these boots and they were a perfect fit. I didnt' mold the liners or do any work to them and they were plenty comfortable for 100k+ vertical last season.

    try these on if you can. they are quite narrow, especially in the forfoot, but could work depending on your foot shape and size. IF you have a wider foot like I do you may want to wait till the tlt 6 comes out this fall! they are supposed to be a bit more roomy for those of us with fatter feet! Get to a shop and get them fitted properly if you want to be sure!

    Unanswered Question

    Any chance of getting these in a 30 or...

    Any chance of getting these in a 30 or 30.5?



    a quick critique

    • Gender:Male
    • Familiarity:I returned this product before using it

    this boot is narrow and not for a wide or full sized foot. I bought my size and it was too narrow for my foot, so returned/exchanged the boot for a Scarpa Rush. I skiied on the Rush's today and love them. They fit my wider foot right out of the box, and they are relatively light also. Fitted the same size in both boots.


    Best Boots Ever?

    • Gender:Male
    • Familiarity:I've used it several times

    After years skiing assorted four-buckle boots from Dynafit’s Zzero series of “all around” AT boots I finally got my hands on a pair of their ultralight two-buckle TLT5 boots. I’ve skied 8 days in these boots in conditions ranging from deep pow to heavy crud and have also gotten to spin some groomers at Grand Targhee Resort in these boots. I’ve skinned ~9000 vert in these boots and have stomped up a few steeps in them as well. Here is my initial review. I will be reviewing these boots at the end of the season regarding their overall durability as well.

    The TLT5 Mountain backcountry ski boot is ultralight and tours amazingly. It is also great for the descent. There are lighter boots out there but this boot is both affordable and light weight. I’ll be riding in these boots every day this winter. I wish I’d gotten my hands on a pair when they first came on the market a few years ago. Peace.

    Best Boots Ever?


    Any update on this review. Do you use this boot to ski inbounds on a set of dynafit bindings?

    They held up great for over 100 days. I reluctantly sold them to a friend when I got my hands on a pair of this year's TLT 6 boots.

    What is the difference between the TF and...

    What is the difference between the TF and TF-X?

    Best Answer

    The "Performance TF" ( is the ultralight carbon-cuffed model in the TLT 5 series. It shares the same ground-breaking construction, but differs with a full carbon fiber cuff and an ultralight liner. The cuff stiffens the boot considerably. I'd rate it at about a 110-120 flex, compared to the Mountain TF-X which has about a 90 flex. Lateral stiffness is similarly ratcheted up. The cuff and liner also make the boot a bunch lighter (175 gr less in a 27.5).


    Buy them if you can!!!

      These boots are as good as it gets. They have a removable plastic tongue for making the skin up easier, and you can pop it right in if you need the extra downhill support. I personally don't ever need the tongue, so its an instant transition at the top. They also climb ice incredibly well. If you can find a pair of these in your size, do yourself a favor and buy them, they will be the last boots you will ever need to buy.

      Hi, Thinking about this boot, but have...


      Thinking about this boot, but have no sense of sizing. I ski size 27.0 black diamond Custom boots and any smaller would be TOO SMALL. I know the 27 quadrant fits perfectly... but I've heard the sizing on these boots can be odd. Any advice?

      These boots run narrow. Officially it is a 98mm last, but many feel it is tighter. Conversely, the BD last is known to be the widest BC boot. The length for you (27.0-27.5) may be the same, but if you have a wider foot, you may need to work with a good bootfitter. It will be well worth it!

      I am going to be choosing size rather...

      I am going to be choosing size rather blindly, as nobody near me stocks Dynafit. I measured my feet to be spot on 280mm long, but should I get the 28.5 to allow for some thick socks? Or will the size 28 be large enough for me if I heat mould the liner around my planned sock layers?

      Do you know what your typical US running shoe size is? I may be able to help narrow it down with that info.

      alo, If you are still in the market, you should probably be looking at a 29.0 if you have medium to narrow feet or a 29.5 if you have medium to wider feet. If you have really wide feet, this may not be the boot for you. Check into Black Diamonds for a wider fit.


      Best Fruitboot for Splitboarding

        These things are amazing. If you splitboard stop wasting time with 1980's strap bindings and softboots. Get some dynafit toe pieces and these boots. Touring function is unreal. File out the "ski mode" hole for increased forward flex. After that mod these things are more flexy than my previous softboots. They surf pow like a dream and can handle the gnarliest ascents thanks to their short sole length and crampon compatibility.

        Dan, have you had to do any other modifications besides the "ski mode" hole? I'd really hate to hack apart a $750 pair of boots.

        Hey Corey,

        Nope that is the only mod I have done. Much less fiddling than I did with my old scarpa boots. I would suggest filing out the whole a few mm's and go riding, if needed file out a little more to desired flex. I don't use the skiing tongue.

        Are these compatable with the Marker Tour...

        Are these compatable with the Marker Tour F12 AT bindings?

        No. The TLT5 series of boots (Mountain & Performance) have toe and heel overhangs that are too short for a frame binding.

        Will these work with Voile Mountain Plate...

        Will these work with Voile Mountain Plate bindings for a splitboard? Thanks

        Best Answer

        They should as the Mountain Plate has the basic attachment mechanism of a crampon (which works fine with the TLT).

        Hey Graham, these work great with mtn plates. if you are using another hardboot binding like the bishop bomber there has been a few issues due to the thicker bail wire.


        So light

          So very light. Uphill mobility is a dream, and tongue insert allows downhill power, drives big skis. Frontpoints like a high top Koflach, but still best of all ski boots. Maybe a bit colder than other boots, but fine to minus 10 this year (seems like the "cold boot" thread is a bit hyped). Ankle and heel very very happy now.


          TLT5 ski great but brrrr

            they climb like my good hiking boots and ski-descend like a good alpine boot. my only trouble with them is cold feet. thinking of getting them refitted or "recooked" to allow thicker socks-more room though part of the reason they ski so well is that the fit is bomber-my heel does not move unless the ski move with it.

            having trouble with cold feet. this has...

            having trouble with cold feet. this has not been an issue for me for years-since they invented thermoplastic liners. any suggestions?

            Best Answer

            Both shell and liner are a bit thinner than typical to keep the weight down. If you re-cook, make sure you have room over the instep where your blood vessels run. This can make a big difference in the warm blood getting to your toes. Check for excess pressure by locking into the boot with a thin sock for a few minutes. Then step out of the boot, pull off the sock and note the red/pink areas. Attach pads to these areas directly on your skin, then re-sock and re-cook. Possibly use a thicker toe cap as well. These adjustments shouldn't affect the performance or loosen your heel fit.

            Weighing In

            Weighing In

            Size 26 (8 US) weighs 2lb 8oz per boot.

            can you climb with the extra tongue in as...

            can you climb with the extra tongue in as it seems putting it in and taking it out all the time is a pain

            Best Answer

            You can definitely climb/tour with it, but a long climb is more comfortable with it pulled. You can also ski without it, depending on your "power preference".