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  • Mammut - Smart Alpine 7.5 - 9.5mm Belay Device - Silver/Red
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  • Mammut - Smart Alpine 7.5 - 9.5mm Belay Device - Silver/Red

Mammut Smart Alpine 7.5 - 9.5mm Belay Device


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    13 Reviews


    Simplify your many belays and rappels on big peaks.

    Designed for half ropes, twin ropes, or thin singles, the Mammut Smart Alpine Belay Device uses its aptly engineered shape to automatically catch falls while increasing your belaying and rappelling options in the alpine. This intuitive adaptation of the award-winning Smart accepts ropes between 7.5mm and 9.5mm for alpine, mixed, and ice climbing.
    • An updated design uses the same non-mechanical construction of the original Smart device to pinch the rope during a fall and make for easy catching and holding
    • The extended lever allows for easier catching and releasing when lowering your climber
    • The auto-lock option allows a lead climber to belay one or two seconding climbers directly below the anchor
    • Item #MAM0490

    Tech Specs

    Rope Diameter
    7.5 - 9.5 mm
    Recommended Use
    canyoneering, ice climbing, mountaineering, sport climbing, trad climbing
    Manufacturer Warranty

    Tech Specs

    • Reviews
    • Q & A

    What do you think about this product?

    Have questions about this product?

    Perfect for me

    • Familiarity: I've used it several times

    I love this device, it gives me the comfort of a Grigri, but the simplicity and rap-ability of an ATC. In my opinion is a lot easier to get the hang of than an ATC, especially for those who are used to tube devices.

    Useful for rappels, unlike most assisted braking devices
    Assisted braking, unlike most rappel devices

    Cons (none of which are a big deal to me):
    -Easy to drop when cleaning and rappelling, unlike an ATC you basically have to take it off the biner. Luckily I haven't done so yet :)
    -You have to use the Smart HMS Locking biner, or another biner with similar diameter and a gate.
    -Lowering your climber and belaying are not as smooth as other devices, but with time you get used to it.

    Great Compromise Between ATC & Gri Gri

    • Familiarity: I've used it once or twice and have initial impressions

    I've been using a Mammut smart for 6+ years. Still the same one I bought early in my climbing career. I find it to be a fantastic compromise between the simplicity of an ATC and the catching ability of a grigri. It weighs half as much as a grigri and you can double line rappel. It has been my go-to for years. The only drawback is that it takes a little getting used to when it comes to rope handling, especially feeding out slack. I also noted that the auto-locking tends to diminish as the carabiner wears, so I'd recommend pairing it with a steel locking carabineer like the Edelrid Bruce locking carabiner to cut down on that kind of wear. Overall, I'd definitely recommend the Smart.

    One more thing: Definitely pay attention to the rope diameter recs for these devices. The 8.9mm-10.5mm device was perfectly fine with a 9.5mm rope, but this device jammed a bit too often and didn't feed as well.

    It gets better!

    • Familiarity: I've used it once or twice and have initial impressions

    This device definitely has a learning curve but if you give it some time you are sure to love it. Rappelling smoothly was the toughest part for me to get down but knowing you are backed up with the block adds peace of mind. I suggest pairing it with the Mammut Smart HMS locking carabiner as this device is quite wide and is difficult to use with a small carabiner. Pick one up, if you do not love it, keep using it!

    Smaller Diameter Rope Necessity!

    • Familiarity: I've used it several times

    As rope improve and get smaller and as i have moved more into the alpine realm I needed to pick one of these up to use with my 9.2 and 8.7 ropes. It works like a dream and is my go to anytime i am using a rope 9.5 or smaller. This fantastic and well proven design is one of my favorite and most indispensable pieces of gear.

    Solid and secure

    • Familiarity: I've used it several times

    Great belay device. Allows for a secure lock off, easy rope feed for belaying both a leader or a second. It is intuitive enough that my kids can use it just as effectively as a grigri. This one unit will likely replace all my other belay devices.


      Smooth belay, fast rope feed, auto locking. Guide set up and subsequent switch to belaying a lead is fast and easy.

      It took me a few times to rappel smoothly without ratcheting. I connecting the device with a biner directly to my harness gave me more control, using the recommended runner between the harness and rappel device made for acquired mechanics.

      Awesome belay

      • Familiarity: I've put it through the wringer

      After owning the OG smart device for a season I decided to buy this device for multi pitch climbs and rappelling. I have had zero issues with the device and I love the simplicity of it. I highly recommend this belay.

      Mammut Smart 2.0

      • Familiarity: I've put it through the wringer

      After having used the original Mammut smart for a couple years, it was a no-brainer to purchase this piece of equipment for those long, multi-pitch, twin rope ice climbs here in Kyrgyzstan. This piece of kit is simply amazing. No moving parts and locks nearly as good as a petzl grigri or trango cinch. Definitely recommended!

      Very cool

        Get the functionality of a Grigri for double ropes. It does take a little getting used to and it tends to grab the ropes a bit more than I'd like when paying out slack, but the ability to auto-lock when belaying or on rappel is really cool. I used this with 7.8mm half ropes and it performed great. I did notice that it wouldn't auto-lock on rappel after the ropes were stretched and wet, but it controlled the rappel very well still.


          I really do like this device. and is unique in the fact that is can be used as a 'auto-locking' rappel device. Used properly is provides a great safe catch. Some things to keep in mind when you use the Smart/Alpine Smart:

          - You will need a HMS style carabiner. That is to say, a pear shaped one. Not D or O shaped.

          - Make sure you get the right size Alpine Smart. They make 2. One that accepts 7.5 - 9.5 and, 8.9 - 10.5. The device ONLY works within it's rope diameter ranges! There is no grey area of acceptable rope ranges like on some other devices. Too thick or too thin for the device, and you're going to have a bad time. I suggest the larger size for the gym (if they even allow locking devices.)

          "Smart" is an understatement

            this thing is awesome. perfect combination of a grigri and a atc guide. locks off quick but can be disabled with a quick flick on the thumb lever for yarding out rope to the leader. the longer release lever give you more control than a gri, and whoever wrote the reviews about it being a horrible rappel device is a bonafide idiot, although its a slightly unnatural technique, it offers more control of speed and still auto-locks for when you've got to retrieve that stubborn piece of gear. uber versatile!!!