Pertex 6 Shell and 'PolarTherm' pile lining. This jacket is at home on ice covered decks in the Southern Ocean with round-the-world yachtsmen or on Antarctica with the British Antarctic Survey staff for whom it was first made. It is too warm for most activities in normal UK Winter conditions. Best suited for inactive use where body heat is not being produced by any exercise.

The features are the same as Mountain Jacket but with fixed hood and large snorkel.