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Item #: aku0011


Spider 8 - Mountaineering Boot - Men's

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Regular Price: $1,099.95


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  • Black
  • Black
  • Black
  • Vibram Mulaz Sole
Product Information

Product Information For The Aku Spider 8 - Mountaineering Boot - Men's


Brand Aku
Weight 49 oz / 1390 g
Footwear Type Mountaineering Boots
Upper Kevlar+3mm Nylon
Midsole Internal Midsole System 1
Last 6-4mm Carbon+3mm Die Cut EVA
Sole Vibram Mulaz
Insole Polyethylene with Double Aluminum Layer
Liner Aluminum Film+Water-Repellent Membrane
Shoe Stability Stability
Sizing Men's US 7-12,13
Country Of Origin Italy
Shoe Width Medium
Material Technology GORE-TEX


The Aku Spider 8 is a mountaineering boot designed exclusively for high altitude use, offering unbeatable performance in terms of comfort, light weight and thermal insulation. The easy lacing system on the inside shell makes them 100% effective in extreme conditions. 360 degree wraparound fastening system for the removable liner.


  • I.M.S.1 ensures excellent wearing comfort by uniform distribution of pressure, preventing lateral and frontal slipping, shock absorption, and contouring to the anatomy of your feet
  • 2 Tongue System makes it easier getting in and out while allowing for more of an individual fit
  • Removable Liner
  • Rubber strips protect seams
  • Cramponable

Reviews For The Aku Spider 8 - Mountaineering Boot - Men's

Questions & Answers

Q & A For The Aku Spider 8 - Mountaineering Boot - Men's

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3 Questions | 5 Answers
Displaying questions 1-3
  • Spider 8 - Mountaineering Boot - Men's


    Dear Sirs! Happy New Year. I usualy use 10.5 US size for the running and regular shoes. Do you think if i take 10.5 Aku Spider it will fit my size?
    Asked on 1/1/2014 by Anton from Madeira Beach,Fl

    1 answer

    • Staff Reviewer


      These shoes generally fit a little big, so you would probably be okay with going with your regular street size, or just a half size up (remember that feet tend to swell a little with work and altitude).

      Answered on 1/2/2014 by Josh - Gear Expert from
  • Spider 8 - Mountaineering Boot - Men's


    How do these compare to the usual 8000m boots, say Olympus Mons, Scarpa 8000, Millet Everest... I cannot find any review online about them.
    Are they going to be warmer than, say, a Baruntse or a Spantik? Equally warm perhaps?
    Asked on 12/30/2013 by nicobar

    1 answer

    • Staff Reviewer


      We don't have any information on the warmth of the boot specifically, but this boot is similar in construction to the other 8000 meter boots that you mentioned. The baruntse and the spantik are both just a double boot with the inner boot and the outer boot. The spider 8 has the inner boot and an integrated gaiter over the outer boot, whith some more insulation around the foot area as part of the gaiter, so they contain more insulating layers than the spantik and the baruntse, so it follows that they would be more warm.

      Answered on 1/6/2014 by Josh - Gear Expert from
  • Spider 8 - Mountaineering Boot - Men's


    How do these fit? I have a street size of 8.5 wide and sometimes 9 (brand dependent).
    Asked on 9/27/2013 by lleibman

    3 answers

    • A:

      I normally wear a street size 10.5, sometimes wide width, depending on the maker. I have a wide forefoot and a regular heel, so I've had to order and send back lots of boots to get the right sizing. Length has never been a problem, it's width. I had a pair of Aku Spider boots, size 11.5, and the width was still to slim for my foot. I changed out footbeds, moved the tongue all around, changed lacing systems and sock thicknesses, this particular Aku was just too narrow for my foot. Put it this way, Keen shoes fit great, but they're not into mountain boots, so that's that. You should be going AT LEAST a half size up, anyway, to account for foot swelling and good socks. I've had to go a full size up on all my boots, change the footbeds out, the right thickness sock, and voila, working, comfortable boots for the long haul. One thing: Aku makes splendid footwear, the Spiders were absolutely blast-proof, I'd still be happily using them if only they'd have been wide enough. Good luck!

      Answered on 2/9/2014 by yomikey from Tennessee
    • Staff Reviewer


      These shoes fit slightly big as far as length goes, so purchasing your normal street size will probably put you in the right range, and make sure that you have some extra room to prevent toe bang and such. Make sure to review our fit guarantee, if the size that you order doesn't fit, we'll get you the right size if we have it in stock (US purchases only).

      Answered on 10/9/2013 by Josh - Gear Expert from
    • A:

      The size 8 will be too snug. Go for the size 9, they'll be better.

      Answered on 9/27/2013 by Community Answer from None
Displaying questions 1-3

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