Metallic Foil Coated Four Way Stretch Nylon Spandex. 
80% Nylon, 20% Spandex.
This is a 4-way stretch fabric that looks like aluminum foil but is stretchy! Black looks like faux leather or rubber.
Available in gold, silver, copper, gunmetal, turquoise, Royal blue, red, green, purple, fuchsia, black faux leather/rubber Metallic Foil.

 Metallic will rub off if rubbed excessively. Foil will separate from spandex backing if worn too tight. Hand wash inside out in cold water, line dry. Iron inside out on low heat. Do not scrub. Do not bleach.