Navatex boots will be necessary for your colder (and more slippery) days this winter. The Montreal company Navatex offers you their products with a fleece lining, non-slip soles and side zippers. But, what makes the difference at Navatex; it's their OC integrated crampon system that allows you to easily and quickly turn your crampons using a key (included) and therefore be able to walk on more slippery terrain without fear of falling.