Details: Chaco ZX/1 Unaweep A variation on their classic Z/1 model, the Chaco ZX/1 Vibram Unaweep Womens offerstwo narrow straps in place of the single, wide strap. Beyond offering astylish alternative, this basket weave option allows for an even morecustomized fit. Just like the single strap models, the dual narrowstraps on this Chaco women's sandal are threaded underneath the foot ascontinuous strands so they can be adjusted tighter or looser, whateveryour preference. The ADDSTRIDE midsole provides a custom fit. This Chaco sandal also has a heel-leash for front and back stability. The Chaco ZX/1 Vibram Unaweep Womens will deliver you comfort and style! MaterialsBioCentric footbedPolyester webbing upperADDSTRIDE midsole. Custom FitVibram Unaweep Outsole. ResoleableWeight12 oz.Country of OriginChinaItem #J100774, J101148, J100162, J101150 1 NeckReduces the occurrence of posture-related neck aliments2 BackMinimizes strain on the back muscles and helps maintain proper spinal alignment3 HipPrevents internal rotation of the femur, which alleviates pelvis tilt and reduces strain on the hamstring and gluteus muscles4 FemurReduces internal rotation and eliminates strain on the IT band, decreasing IT band friction syndrome5 KneeAlleviates strain on the knee joint, preventing bursitis and medial knee injury6 ShinReduces torsional strain on the tibial muscle structure and the incidence of shin splints7 FootHelps prevent over pronation, plantar fascitis, and various injuries to the foot Lasting arch support controls pronation.ChaPU (polyurethane midsole provides durability for years of adventure.Heel risers increase lateral stability.Multiple widths ensure proper comfort on your adventure. 10 Step ChallengeWatch the 10 Step video to learn about the ADDSTRIDEâ¢ footbed, how it affects your walk, and the benefits it provides your body!