Shoe size customary markings, such as EU, UK and US sizes, can also be used. Because Mondopoint takes the foot width into account, it allows for better fitting than most other systems. A given shoe size shall fit every foot with indicated average measurements, and those differing by no more than a half-step of the corresponding interval grid. Mondopoint system is widely used in sports industry to size athletic shoes, ski/skate boots, and Pointe ballet shoes; it was also adopted as the primary shoe sizing system in USSR/Russia, GDR, China , Japan/Taiwan/South Korea, and as an optional system in United Kingdom, India
Air Force (shoe) retailers used to be prohibited by Nike who had restricted supply of the sneaker. Nike now allows retailers to offer the shoe for sale online. As a performance shoe, the AF1 is still used for street play as well as for professional play. NBA players Jerry Stackhouse (who now wears Adidas) and Rasheed Wallace have worn AF1s on court. Nike Air Force 1s were originally considered the favored shoe of inner-city youth, especially in Harlem, New York; hence the nickname "Uptowns". Rapper Nelly and his group, St. Lunatics, collaborated on a 2002 single entitled "Air Force Ones" about the shoes.