The unique design of the Xtenex lacing system resolves the problem of lace migration. Lace migration is the gradual movement of the shoe lace toward the forward bend of a shoe, which causes two main problems: Binding: a tightening and restricting pressure at the top of the shoe. It can lead to foot fatigue, pain, numbness and restriction of natural foot swelling. The migration loosens the fit around the footwear’s metatarsal area, which causes increased slipping and reduction of forward foot stabilization. This can produce heat friction, which often leads to painful blisters.