Based on tests on how the cold is felt on the field and in the laboratory with a panel of users, we measure the thermal resistance of our shoes at rest (static) and in activity (dynamic). It is now possible to know precisely up to what temperature your shoes protect you. Temperature limits of comfort are indicated for your shoes. We take into account differences in sensation between men and women in our data.

Tested in the laboratory, the shoes ensure you an optimal impermeability. First immersed in water under air pressure, they are checked for bubbles in the surface of the boot. Then they are placed on a mechanical arm simulating walking, half immersed in water. We then check if the inside of the shoe remains perfectly dry. These laboratory tests are supplemented with use and aging tests on the field.

During the impermeability test, we tested 3 levels of impermeability, 2000 flexions (about 4 km of walking), 4000 flexions (about 8 km of walking) and 8000 flexions (about 16 km of walking).