Hiking: For hiking on easy to moderate trails and relatively smooth terrain. Lighter and more flexible.
Mountaineering: For mountaineering in high and difficult terrain, snow, ice, and more demanding conditions. More rigid and protective construction, often compatible with crampons.
Trekking: For more demanding and longer routes, with uneven terrain. They emphasize stability and protection.
Nubuck Leather: Leather with a soft, velvety surface, treated from the outer side of the hide, offering good durability and protection for outdoor use.