XTENEX- Premium Elastic No Tie Shoelace, Performance Fit - Enhanced Comfort for Boots and Running Shoes - Original Patented Flare Knot, 30" Black

Xtenex (indeXed-TENsioning-nEXus) is a worldwide patented lace technology that produces adjustable tensioning between shoe eyelets. This technology addresses the source of footwear related pain and discomfort: 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. This can lead to foot fatigue, pain, numbness and restriction of natural foot swelling. It 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. The unique design of the Xtenex lacing system solves the problem of lace migration. Xtenex laces have an elastic core and a series of knots along the entire length of the lace at consistent length intervals. Stretch the lace and the knots disappar, allowing you to thread the lace through the eyelets. Release the tension and the knots reappear. More knots between eyelets lessens the tension; fewer knots between eyelets increases tension.