For a more centered experience and locked-in fit, turn to Saucony Xodus 4.0 running shoes for unmatched confidence in motion. The updated Pro-Lock™ support band has been integrated into the lacing system for an improved overall fit and feel, especially on slippery and uneven surfaces. Built to handle tough terrain, these runners are your ideal partner.Upper: Pro-Lock™ support straps on either side of the midfoot encase the foot and lock it to the platform. Gusset tongue. Flat laces reduce irritation and pressure points. Lace garage. Padded tongue and heel collar enhance instep comfort. Breathable mesh increases ventilation and flexibility.Midsole: HydraMax™ Collar Lining material combines superior moisture wicking properties with a plush hand feel. ComfortLite™ Sockliner contoured to cradle the heel, support the arch, and reduce peak pressures in the forefoot is built from premium EVA for an exceptionally responsive feel. PowerGrid™ heel insert powerfoam material is integrated with GRID technology to create a system that effectively centers the foot, absorbs impact, and distributes pressure, resulting in an exceptionally smooth and responsive ride. S SL EVA maximizes rebound and durability while minimizing weight. Removable insole.Outsole: Vibram XS-Trek Compound outsole provides feedback on grip and geometry of terrain to prevent slipping. Multi-directional lugs delivers exceptional grip and traction.