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If the list of adjectives describing your next approach include 'steep,' 'sketchy,' 'slick,' 'wet,' or 'treacherous,' the Zamberlan Monster GT RR Shoe features a Gore-Tex membrane, a Vibram outsole, and plenty of tech to shepherd you to your crag. Blurring the line between a traditional approach shoe and a sturdy hiker, the Monster combines a precise fit, plenty of grip, and impressive edging capabilities to create a shoe that's as trustworthy on trails as it is on talus.

  • Gore-Tex XCR waterproof and breathable membrane keeps you dry through wet and muddy conditions and allows foot sweat and moisture to escape
  • HydroBloc split-leather upper stands up to abuse and features a waterproof coating that repels moisture before it even reaches the Gore-Tex membrane
  • Up-to-toe lacing system provides a precise fit and aids traction
  • Flat last provides greater sensitivity when navigating tiny features
  • Sticky Vibram outsole provides exceptional grip over a wide variety of terrain
  • Dual-density EVA midsole wedge absorbs shocks and helps cushion your steps
  • Rubber rand helps lock your heel in place and enhances durability
  • Zamberlan semi-PCS system on heel is compatible with step-in crampons
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Excellent Summer+ Season Boot

  • Familiarity:I've put it through the wringer
  • Fit:True to size

Great boot, well built, durable, light weight, narrow sole and slight flex in the toe great for edging on short rock sections. Crampon compatibility comes in handy for short glacier crossings and late season ice/snow filled couloirs. I would compare these to the La Sportiva Trango S EVO GTX - but less bulky as they're more of a mid than a true boot. Great for summer/late spring/early fall in the Sierra Nevada - or even closer to winter in years like the past two with little snowfall.


    First off, I m a big fan of Zamberlans and own 3 of their boots. The Skill GT, Vioz, and Steep. I m very very happy with all three of them. I was really hyped when I saw the Monster since I had been shopping for a light weight mountaineering boot for quite some time and did not find one that fit my foot volume.
    Out of the box, the shoe fit like a dream. I wear a size 12 in Zamberlan and this was true to size. the shoe was extremely comfy. For those of you who own the Steep and know what comfy is, will find yourself redefining that notion once you wear the Monster. Yes, it is that comfy. I took it for a light hike in a near by trail and it performed admirably. Please note that this is a stiff soled boot and walking from the car to the trailhead or any kind of smooth level path is a pain. But once you are on the trail the support is amazing. Also, coming back down the shoe provides ample support and it is so soft inside that there absolutely no discomfort with your toe hitting the front of the shoe. There is also tremendous grip in relatively slippery portion of the trail.
    Once I got to the steep part of the trail which required walking on scree and extremely uneven and steep terrain the shoe performed very well going up... coming back down was a completly different story!!!. The shoe is extremely unstable. Usually moutaineering boots are made a little narrower than backpacking boots, I own a stiff winter mountaineering boot, but the Monster was different. The shoe suddenly decides to tip over to one side without any warning whatsover. This happens on both the left and right sides. Luckily for the excellant ankle support and tight lacing I didnt break or sprain my ankle. This happened multiple times on the steep and uneven section of the trail. The shoe starts to perform well once the incline drops to 25% and the trail is relatively smooth. But who needs this shoe for that kind of terrain.
    I spoke to the Backcountry help desk and I was told that this was indeed odd and was maybe due to the fact that the shoe not being broken in properly. So after about 20 miles of breaking in on normal trail, I took it back up again to the higher steep sections and guess what, Bang!!! the shoe tips over. I was really really nervous coming back down since I had hiked really high up a steep section and there really were'nt many people around to call for help if I had sprained or broke my ankle. I walked very very slowly back down the trail and even then the shoe tipped over a couple of times.
    I promptly have returned the shoes with an extremely heavy heart. Zamberlan makes excellent shoes but the stability of this boot needs to be checked out.
    I will definetly buy this shoe again if Zamberlan fixes this problem.


    I understand your disappointment with the specific use of the Monster on your decent, but I know why the boot performed the way it did. The heel cup of the Monster is very stiff and the out-sole is designed for edging along technical aspects of rock faces. If you are descending a boulder/scree field in these boots and landing on each boulder with a heel strike, the stiffness in the heel cup will protect your foot, but as you described so well, there is little the midsole under the heel cup and the inertia of your landings will make you feel unstable because it is indeed a stiff boot and with little surface area contact between the outsole and the rock, you will have an ankle twisting bonanza. Zamberlan designs the Monster this way so the climber feels maximum sensitivity of the rock underfoot when edging. I think all end users will love this boot, but need to be mindful of the surface you're heel striking on.

    I did not have these issues, they preformed flawlessly for me this past week in the High Sierra. Very stable, great edging on the fourth class stuff - still pretty stiff, but just enough flex at the toe to really let your toes grab and feel for small holds, great security and protection on the Sierra scree surfing, very good stability descending boulder fields. Pretty well built too, I beat the hell out of them for 5 days straight - can tell these will last for awhile.