The Epic Series is rated to perform in temperatures as cold as -70C/-94F during moderate activity. This series is a collection of technical, lightweight expedition worthy boots featuring our waffle-comb foot-bed to trap warm air under your foot. With Icepaw Design pads, which improve contact-point grip on ice, and our Arctic Rubber compound in the shell to provide flexibility in cold environments, the Epic Series has everything you need in a performance winter boot.