A sized demonstration kit distributable or mailable to customers for marketing purposes is illustrated with reference to a moisture control material and system for wicking away and dissipating body moisture. The kit has a relatively small holder in the shape of a container or foldable device having, an exterior surface for at least a printed address and postage, an interior surface defining a storage space, with access to the storage space. Optionally the holder is transparent or with a viewing window. Samples of the moisture control material and associated items for testing purposes are removably offered to the interior surface of, a first space for printed information on the nature and operation of the moisture control material and system, and a second space for printed instructions on how to test at least one of the samples of the moisture control material are disposed in the holder.