The Monolith GTX is a new 4-season boot from Mammut, owners of the brand formerly known as Raichle. It is very lightweight with synthetic materials on the upper and a particularly modern design. The benefits of the design include the reduced weight and the performance for the price. This boot slips onto the feet and feels close-fitting and dexterous immediately, making it ideal for more technical climbing and mountaineering. The high ankle cuff was very comfortable while that fabric and synthetic upper hugged my feet well, though they are quite narrow. It has a good low ride to the ground and a good rolling action too, so it is comfortable below the snowline too. The stiff sole was ideal for scrambling and the smooth climbing zone under the toe allowed even better grip on the tiniest of edges. When the going gets tough the high rubber rand will provide valuable protection. There is a lug at the heel for a crampon heel clip too. But the Mammut Monolith GTX lacks the insulation provided in some other 4-season boots, so it is not the warmest option. The outsole has a very shallow lug pattern, so they are not ideal for trudging through snow without crampons. Also the fit and toe profile were quite close on my narrow feet, so wide-footed people may find them a bit of a squeeze for general walking.
Upper nubuck and textile; Gore-Tex waterproof lining
Sole Vibram Mulaz
Sizes 6-13 (men’s); 4-9 (women’s)
Crampon compatibility B2
Weight 1906g (pair, size 11)
Made in Romania
Stores in the UK no info provided
The Mammut Monolith GTX is a lightweight, climbing-orientated 4-season boot that may not be as good as some for trudging over snow slopes in the coldest of weather.
Review by Graham Thompson
First published in Trail magazine December 2009