A compartment to hold dis tilled water waiting to be consumed or measured Most catchpockets were used m stillsuits A series of two and sometimes three were interconnected so that overflow from the primary would not be wasted The CEREMONY OF THE SEED 152 CEREMONY OF THE SEED heel pump, besides aiding in the distilling process, moved distilled water to appropriate carrying points where the catchpockets were built into the stillsuit The wearer sucked on an attached catchtube to drink the water from the primary reservoir Valves were rarely used in catchpocket system of the sullsuit, but a few surviving suite contain a capillary type, flapped suction valve on the primary pocket Dating suggests that suits developed by non-Fremen in the villages first used these valves They served as a back-up precaution, behind the catchtube plug, to prevent accidental spillage Use of the valve seems to have skipped over the sietches closest to the villages, but to have caught on in the deep desert settlements fairly late in the Dune era The capacity of stillsuit catchpockets varied between 25 and 5 liters (combined capacity) It seems unlikely that a conscientious user ever needed that much storage Stilltents have been found with total capacities approaching two liters, but most could store onlj about one liter Variations on the fundamental catchpocket were used as waiting basins on the portable deaths tills and, temporarily, in connection with windtraps CEREMONY OF Tfffi SEED.