Abstract: The present invention includes an air valve having a housing sealed to an inflatable device. The housing includes an opening that matingly receives a check valve with an inner surface defining a passageway. A cap is in turn matingly received in the passageway of the check valve. The housing, check valve, and cap are all attached to and interconnected by a tether. During the inflation process, the check valve is positioned in the opening in the housing and a source of pressurized air is delivered to the check valve until the desired degree of inflation is achieved, at which time the cap is inserted in the passageway of the check valve. To deflate the device, the end of the tether is pulled up which acts to sequentially pull the cap free from the passageway of the check valve and pull the check valve free from the opening in the housing.

Abstract: A tray support system for a bag having an internal compartment with an access opening in the front wall. The tray support system includes a pair of opposing tray support brackets attached to opposing vertical side walls of the internal compartment. Each of the pair of brackets has a plurality of keyways that are horizontally aligned to form complementary keyways that receive keys carried on the side edges of removable spanners. Each spanner can support an individual tray and includes a recessed notch in its front edge to provide easy access to the tray. The tray support brackets are releasably attached directly to the side walls of the compartment. When the trays are not in use, the spanners may be removed making the space in the compartment substantially unobstructed and useable to store various items. Also, the brackets are easily and conveniently removably so that the bag may be folded for storage.