The Mammut Atlas GTX is a very comfortable boot straight from the box, partly due to its very low weight of just 1058g (pair, size 11). Also, the upper is made from mesh and is very flexible, so it’s able to mould around the foot more easily than a leather upper. Under the foot, a large wedge of cushioning gives this boot a very bouncy ride on every step, which is particularly comfortable on hard surfaces. But while the boot is great in terms of comfort, it isn’t so good when used on more challenging terrain away from level footpaths. The upper is so soft that it doesn’t support the foot as well as stiffer boots when traversing slopes, and as a result it may not be as durable. The toe box is quite soft and doesn’t offer great protection from stray boulders, and the sole unit isn’t very stiff, which means, again, your foot has to work quite hard on rockier ground. On mud or soft grass slopes the outsole lacks the bite of some boots, because there is no heel breast to provide extra downhill braking, while the lugs aren’t quite as deep and aggressively shaped as some other boots. This all makes the Mammut Atlas GTX great on level paths, but not as good as other options on challenging routes.
Upper materials synthetic mesh, suede leather
Waterproof lining Gore-Tex
Sole unit Vibram HLX
Men’s sizes 6.5-13
Women’s sizes 3.5-9
Weight 1058g (pair, size 11)
The Mammut Atlas GTX is comfy straight from the box, but the performance can't compete with other boots on tougher terrain.
Review by Graham Thompson
Published in Trail magazine December 2013