Open, light, and flexible with an adjustable secure fit. Ideal for pilates, yoga, etc.Lightweight, shiny polyester upperSlip on style with adjustable hook and loop strapWool poly sockliner with 2mm PU foam cushion3 mm XS Trek rubber compound outsole for excellent grip and close to the ground feelBest uses for this shoe are functional fitness, plyometrics, Pilates and Yoga, etc. *From the manufacturer's description