As you know, when your feet are cold your whole body is cold. Also, if your feet are wet or sweaty it doesn't take long before you end up with crook feet. The AAD issue us with two types of high quality boots for outdoor Antarctic conditions. For summer we use Baffin boots manufactured in Canada and rated to -40 Celsius.
For winter we use the extreme Sorel glacier boots also manufactured in Canada which have a 13mm felt inner boot and 13mm double felt sole rated to -73 Celsius.
While on the ice, boots are fitted with chains for traction and crampons for ice climbing.
Extreme weather mitts are made by Grandoe in the USA and are the Annapurna mountaineering mitt.
Maintaining body warmth is done by layering cloths.
The bottom layer consists of long thick woolen socks and a pair of woolen thermal underwear. (Top & bottom)
The next layer is micro fleece pants and top.
The next layer is polar fleece pants and top.
Depending on the activity, the next layer is Carhartt quilted bib and brace coveralls and a matching Carhartt quilted jacket.
If you are doing field work in extreme conditions or if it is windy instead of the Carhartt you would wear a custom made Antarctic shell bib and brace and jacket. These layers are adjusted for comfort and temperature control and is supplemented with gloves, mitts, neck warmer, hats, balaclava, goggles and sunglasses.
Whilst on the ship, at all times expeditioners have to have their emergency pack at the ready. This contains a basic set of survival cloths should it be necessary to abandon ship. Expeditioners have to carry a similar emergency pack whilst flying on aircraft or traversing on land vehicles. As well as spare cloths in case you fall through the sea ice, these emergency packs also contain habitations and food.