A wheel-mounted, heavy-duty wire rack system for shipping, storage, and delivery of environmental suits and other garments includes a multi-shelf wire rack mounted on a sturdy wheeled base. The moving arrangement selectively moves the movable member in a first moving direction from a current holding position to another one of the plurality of holding positions. Thus, the discontinuous surfaces may be prevented from being formed between the organic layer and the inorganic layer, thereby preventing the peeling of the organic and inorganic layers and increasing light transmittance.