The revolutionary feature of the Eternal Angel Wing Stilettos, that enables them to be guaranteed for a lifetime, if not generations, is due to the fact that the stilettos have eleven marine grade polished stainless steel grub screws buried deep into the main sole.

The other revolutionary feature of the stilettos is the addition of the stainless steel exoskeletal lily stamen heel, originally used on another of Christopher Shellis' designs (the world famous Eternal Diamond Stilettos made entirely from solid gold and diamonds, costing £120,000).