Abstract: A one-way outwardly gas and moisture vented, plural-layer bag for a product, such as a dry bulk product, in which bag a concealed valve is positioned near one side, and close to the originally open top, of the bag. Openings in the valve communicate with confronting openings in a gas and moisture impervious inner layer in the bag.
Abstract: A method for making a multi-layer helmet shell wherein inner and outer, structural, load-bearing semi-rigid layers are spray-deposited onto opposite surfaces of a pre-shaped, pliable viscoelastic, acceleration-rate-sensitive, microcellular foam core.
Abstract: A cervical support structure which includes an elongate collar that is removably wrappable about a user's neck, a size-adjustable, pillow-receiving sling structure effectively joined to the outside surface of the collar, and pillow structure which can be removably received by the sling structure to function as a pillow support element cooperating with the collar in the providing of cervical support.