The unique design of the Xtenex lacing system get rids of the lace migration problem. 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 pain, numbness, foot fatigue 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 create heat friction, which often leads to painful blisters.