MammutSmart 2.0 Belay Device

One of my favorites, imo best belay for less than $50. Descending a climber requires a little different technique but is smooth and easy with a little practice.

I've had to use a grigri a few times and I do not like having moving parts in a belay device. This thing feels great to belay with (top rope or sport). Much more comfortable than other devices I've used before. Would recommend!

Easy to use great product

Easy to use and quick to take or feed rope. Extra safety over an ATC is great too. Glad it comes in orange now to match the rest of my hardware.

Def a learning curve just like any auto locking belay device compared to atc just on descending climbers and giving out slack for leading climbers. I’ve only climbed indoors so far and love this device for top rope because it makes things much smoother with the thicker ropes my gym has. When setting the belay device for top rope I simply filter the end of the rope into the mammut and carabiner attached to my harness quick n simple and tie off a safety knot.I just got into lead climbing and I’m a bit fidgety when giving out slack as I don’t like to keep the device open for long with my thumb so it can be stressful at times when I’m short roping my friends when they’re clipping due to the auto lock coming down on me when trying to be quick with it. With lead belay setup you have to detach the entire device then attach the device with the rope inserted back to ur carabiner. When bringing down climbers on lead you need to find the sweet spot on the way you angle the device with ur thumb and control the pace of the descent with ur break hand. (Ive lost control here and there nothin catastrophic but one close call when trying out a new carabiner that was thinner then my OG one)I’d recommend it but I’m still exploring my options. I prefer the smoothness of my black diamond atc over mammut on lead belay but it does not have the added safety that I want. I plan on putting it up against the edelrid giga jul soon since some prefer it over the grigri

I use it as a rappelling device for saddle hunting and it works great. It’s a much more affordable option not the mad rock safeguard and it’s in stock.

Good for a very limited application which is lead-belay with single rope where the belayer's reliability or experience is less than optimal - probably in a multi pitch context. In the case of a lead fall, the device will lock without the belayer taking any action and it would be difficult (but not impossible) for the belayer to prevent this through some combination of poor hand position or distraction. The functional price for this security is high however. Feeding slack is very awkward and feeding slack quickly is almost out of the question regardless of experience level; predictably impossible for a beginner. It also sucks as rappel device; don't even try it. As a toprope belay point to belay a second directly off the anchor, it's fine but nothing remarkable. Bottom line: similar to Grigri as an auto-lock with the same requirement to set it up correctly and overall lower performance compared to a Grigri. It is definitely lighter and less expensive than big G.

It is a little picky on the carabiner you use but once find the right one, it’s solid.