Details: Â Chaco Flip EcoTreadâ¢ Above and beyond the ordinary flip-flop, thatâs the Chaco Flip Ecotread Womens.This women's flip flop features a biomechanically correct contoured footbed and soft polyester strapsthat make it the ultimate fixed thong. A rubber outsole and polyurethanefootbed hug feet and flex with every step. The EcoTread outsole is made from 25% recycled rubber to minimize the impact made on the environment. This Chaco sandal features a soft polyester webbing upper that's water-friendly and machine washable. Step it up a notch in the Chaco Flip Womens! MaterialsPolyester webbing upperBioCentric footbed with PU formulationNylon toe piece25% recycled EcoTread rubber outsoleWeight7 oz.Country of OriginChinaItem #J100050, J100660, J100650, J100656, J100668 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!