Footwear consists of garments worn on the feet. It is an attire for the feet, as in shoes or slippers.

-see also:
"Footwear" is in the NAICS Code "3162"
  (Footwear ManufacturingFootwear Manufacturing)

"Footwear" is in the CPC Code "2932"
  Footwear with outer soles and uppers of rubber or plastics, other than waterproof footwear, sports footwear and footwear incorporating a protective metal toe-cap