The Marathon Shop - What is Xtenex? Xtenex (indeXed-TENsioning-nEXus) is a worldwide patented elastic lace technology that produces adjustable tensioning between shoe eyelets. This technology addresses the source of footwear related pain
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Amazon.fr : Lacets Elastique - Nike / Running / Vêtements Et Équipement De Sport : Sports Et Loisirs
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