Details: Â Chaco Zong EcoTreadâ¢ The Chaco Zong Ecotread delivers the usual Chaco comfort in an attractiveand functional slip-on with an EcoTread outsole that's ideal for a widerange of casual uses. With its shock-absorbing Biocentric footbed andarch-hugging contours, your feet will thank you on those casual outingsturned walk-a-thons in this women's sandal. At home, in town, or at river's edge, this Chaco sandal'sadjustable straps provide a secure and comfy fit. When you'd rather gobarefoot but need traction and protection, the Chaco Zong is your sandal! MaterialsPolyester webbing upperBioCentric footbed with PU formulation25% recycled EcoTread rubber outsoleWeight9 oz.Country of OriginChinaItem #J100044, J100558, J100560, J100564, J100338, J100336, J100566 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!