The Terraflex fits true to size. The Xero Shoes™ TerraFlex are a lightweight outdoor shoe, lugged outsole injected with foam to ensure a comfortable, secure foot across all terrain. Lace up closure, hell pull-tab, padded tongue and collar. Breathable mesh upper, wide toe box, toe bumper, heel strap and mid-foot webbing to help secure and support. Adjustable instep straps on the quarter panel. Reflective detail on the straps. Removable synthetic insole. Imported.