Scared Stiff plastic protector set. The set includes protectors for the major plastics, as well as a sandwich system for the slingshots that protects against airballs from below and above. The set also includes a lift kit - new posts, spacers and rubber washers to raise the slingshots slightly (not shown) and top protectors for the slingshots (also not shown).
The slingshot protectors are compatible with Dancing Boogiemen, and with aftermarket slingshots.
Installation instructions for slingshot protectors are here.