The Sixton Peak Montana 81156-21 from the Endurance collection is a sturdy, comfortable safety boot. The black upper is made of beautiful nubuck leather, greased and then treated with Sixton Hydrotech so that it repels water. If moisture does penetrate the nubuck, it will not reach further than the HDry membrane that is placed between the upper and the inner lining. This hydrophilic textile not only retains water, it also prevents it from remaining between the layers. This boot is lined on the inside with an Airplus 3D lining, which is pleasantly warm or cooling depending on the outside temperature. The feet stand on top of Dual Insulation insoles that have been specially chosen for their extra cold-resistant properties. An anti-perforation midsole keeps sharp objects out. This is not metal, but a synthetic material that works just as effectively. Toe protection is provided by a layer of ultra-light plastic composite. This provides protection against an impact of up to 200 joules. No metal in these places not only means more resistance to electricity, but also that less cold is retained! All Montanas are completely metal-free, including this one. An integrated ankle brace (Dynamic HC control) and footrest (Stabil Active) keep the heel in the correct position, provide support to the heel and arch and control the lateral movement of the ankle. The Montana fits well around the heel thanks to the Dual Micro padding, which prevents wear and tear on this part of the boot. The PU/PU outsole is shock-absorbing and offers excellent stability and grip. SRC-standardized. There are also carbon fiber WED strips for anti-static properties. With creep nose, which significantly improves the wear resistance of the nose. Highly recommended for those who often work on their knees.