CruisingTrav, my husband and my friends husband didn’t even take a jacket, so dont feel like its necessary. The polar trips are very different to Ponant usual cruises. our cruise had approx 50 aussies on board, maybe that’s why it wasn’t required, as we are generally more laid back.... Definetely dont need ski pants, we just wore pants under our waterproof pants, quick dry.  And lastly enjoy! It’s truly amazing!