Details: Chaco Z/1 Yampa Men A new profile to the timeless classic. The new Chaco Z1 Vibram Yampa Men has an outsole that is lightweight, low profile, and slip resistant with increased traction from an improvement in lug design helping evacuate water. VibramÂ® Yampa is also a net fit design meaning the outsole is sized to the midsole, eliminating the trimming process and reducing the amount of waste. ChaPUâ¢ midsole on the contoured ADDSTRIDEâ¢ footbed provides lasting arch support and body alignment. The Custom Adjustâem upper features soft polyester webbing that dries fast and maintains a consistent fit for this men's sandal. Comfortable and ready for adventure... get going in the Chaco Z1 Vibram Yampa Men! MaterialsPolyester webbing upperADDSTRIDEâ¢ footbedChaPUâ¢ midsoleVibramÂ® Yampa outsoleCountry of OriginChinaItem #J102103, J102105, J102111, J102113 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!