Seen in Lynch's Dune (1984), the stillsuit is a full body suit worn in the open desert that is designed to preserve the body's moisture as well as act as a heat-exchanger. It consists of various layers that would firstly absorb the body's moisture through sweating and urination, and then filter the impurities so that drinkable water would be circulated to catchpockets with a secondary cooling effect. The individual could then drink the reclaimed water from a tube attached to the neck.