Retail giant Nike is developing a version of Marty McFly’s futuristic self-lacing shoes from Back to the Future II. Formerly a fictional concept, the autonomous fastening system either loosens or tightens the upper laces without intervention from the wearer, a system that is particularly helpful for people with motoring disabilities. Nike’s lead designer Tinker Hatfield is reported to have said at a recent press conference that the futuristic shoes will arrive right on time for 2015, which is when McFly first wore them in the movie.