Stretchable, size-adaptable fabric helmet insert with shock-bsorbing structure

A stretchable-adjustable, cushioning helmet insert employable in the hollow, domed interior of a selected-size helmet shell, said insert comprising

• a generally domed cap adapted for installation within such a shell interior, and formed of a reversibly stretchable fabric, by way of which the cap is biased toward a nominally size-contracted state in which it possesses a size that allows it to be freely placed and received within the hollow, domed interior of such a shell in a manner wherein these exists a defined, surrounding expansion space between the outside of the cap and the inside of the shell allowing for a defined amount of reversible outward expansion of the cap within the shell, and
• cushioning structure in the form of plural, spaced cushioning pads positionally affixed to said cap on the inside thereof in a manner whereby expansion and contraction of the cap causes spatial retreat and closure, respectively, of the spacings existing between each pad and its neighboring pads.