While we can't find the sizing guide for Nike Air Mag, anecdotal sources suggest that Nike shoes run a bit smaller than other brands of athletic shoes, such as Reebok and Adidas.
So buy Nike shoes either a half size or a full size up, even if going off of the Nike shoe size chart. For example, if an individual typically wears a 10 or a 10.5, a Nike size 11 would most likely fit the best. People that have wide feet will most likely want to order a half size up and the "wide" model of the shoe.
Using your measurements, refer to Nike.com's chart to determine your shoe size.
According to The Verge, of all the technological innovations promised by Back to the Future II, two are most desired: the hoverboard, and self-lacing shoes. While the former is still only in prototype form (despite what some might say), it seems like we might be getting a pair of the latter sooner rather than later. Find out more here.
Tip! To find the latest updates about Nike, just visit their Facebook page or follow them on Twitter @Nike.