Last year the company updated the classic boot, first worn in 1968, with a soft, lightweight design aimed at enhancing touch, feel and control.

Its lightweight design, at about 7lb, has made it a favourite with bodyguards and for fighting at close-quarters.

These and other recent cases have been attributed to the lightweight design of modern football boots, which provide less protection to the foot.

Frames are often constructed of moulded carbon fiber, for a lightweight design, although more traditionally frames are constructed from steel, aluminium, or other metal alloys.

The strength of cast iron allowed a more elegant and lightweight design, especially compared with heavyweight granite bridges.