ABEO Taylin Black Leather Ballet Flats with Bio System Technology "B.I.O.” stands for "built-in orthotic,” an orthotic footbed that is not removable like most orthotics, but instead built into the shoe itself. Exceptional arch support helps reduce pressure on joints by properly distributing weight and balance. Our cushioned deep heel cup helps absorb shock, preserve your natural heel pad, and properly align the body. Size: US 8 Genuine leather upper Superior arch support Slip-on Rubber outsole Pleat, pintuck detailing on vamp Black Excellent preowned condition Smoke and pet free black leather ballet flats, ABEO Taylin shoes, slip-on work flats, minimalist office shoes, Parisian chic style, quiet luxury flats, capsule wardrobe shoes, classic balletcore footwear, comfort leather flats, supportive workwear shoes, everyday walking flats, commuter-friendly shoes, polished casual style, bio system footwear, lightweight travel flats, timeless classic shoes for women, orthotic arch support, podiatrist-recommended comfort, built-in foot alignment support, all-day wear cushioning