Vionic Kellyn Flatform Sandal NEW, worn once. Orthaheel technology for maximum comfort. Stylish AND supportive! Color is Moonlight. -Linen upper, asymmetric accent strap, criss-cross straps with hook-and-loop closure, back strap -Undulated outsole -Durable rubber outsole with textured tread offers good traction on a variety of surfaces -Podiatrist-designed orthotic footbed with Orthaheel® technology and a deep heel cup helps stabilize and support your foot's natural alignment while wearing -Three-zone comfort with ultimate arch support -Helps to relieve common causes of heel pain and knee pain, related to over-pronation and flat feet