Vionic Bella Toe Post Flip Flop Thong Sandal in Pewter Color With Bow Sz 9 The most supportive shoe ever. Our Vio-Motion footbed technology delivers Three-Zone comfort with ultimate arch support for a difference you can feel. Podiatrist designed Microfiber covered Bio mechanical orthotics footbed with orthaheel technology and deep heel Cup helps to relieve common causes of foot pain and knee pain related to over leonationoand flat feet Ideal option for orthotic or arch support wearers EVA midsole absorbs shock, helping reduce stress in feet. True to size-half sizes should size down GUC