This shoe’s warm and insulating materials provide good protection against snow and cold.
Lab- and field-tested with hikers. We verified the comfort temperature both at rest and walking because this varies a lot: -4°C when stationary and -16°C when moving. We also considered the difference between how men and women experience temperature.

A membrane ensures optimal water-resistance. A membrane is a very fine component (5 to 25 micrometres) affixed to the inside of a fabric that prevents water infiltration but allows moisture to escape. These shoes keep your feet both warm and dry. The sole insulates against contact with snow.

Thermal comfort is a balance between the warmth and breathability. Too much heat or not enough breathability lets moisture accumulate and cold to set in. Inspired by your activities, occasional or regular, a membrane prevents water infiltration on one side and lets moisture escape on the other.

To ensure your boots are waterproof, our laboratory tests simulated walking with the boots half-submerged in water. Field tests measured wear and aging. We tested three levels of waterproofing: 2,000 flexes (approx. 4-km hike), 4,000 flexes (approx. 8-km hike), and 8,000 flexes (approx. 16-km hike). This shoe has been tested for up to 8,000 flexes, which is equivalent to 16 km of walking.

A shoe’s traction depends on the number and shape of the lugs. The grip depends on the sole materials and the tread pattern, like car tires. Traction optimizes propulsion, prevents slipping when going uphill, and stabilizes the shoes.
Grip prevents the shoes from slipping and skidding on smooth ground or in demanding conditions (rain, snow, and ice).