A liquid accommodating container having a configuration that allows ink to be substantially used up, does not require an increase in size or a complicated construction, and can be fabricated at lower costs. An air mattress configured to be inflated for use and deflated when storage is desired, and an air mattress. The upper filtration zone comprises an upper collection zone, a sponge zone, and a deep bed filtration zone; and, the lower filtration zone comprises the retainer ring, a supported hydrophilic membrane and a lower bed filtration media. In still another of its aspects, the present invention relates to halogen-free and sulfur-free shaped articles. The filter-polarizer element may be further configured to suppress propagation of at least one undesired mode in the cylindrical common waveguide. Consequently, a plurality of semiconductor wafers can be accommodated efficiently and safely without increasing the space between each pair of mutually adjacent semiconductor wafers.