Ellwood Safety Appliance metatarsal guards are designed two ways. One to be worn by lacing into most lace types of safety toe shoes/boots, or the second with a spring strap which rests under the instep to secure placement on the shoes/boots. This aluminum alloy metatarsal guard is equipped with a sponge pad. Style 800 and 801 metatarsal guards provide protection equivalent to ANSI Z-41 1991 75 ft. lb. rated footwear.