Hand-stitched construction for flexibility. Poliyou air insoles for moisture and odor absorption enhancing foot comfort. Padded tongue and collar. Internal heel contour for added support. External and internal heel counter for extra firmness. Polyurethane sole for shock absorption and durability. Medicare/HCPCS code = A5500 diabetic shoe. Measurements: Weight: 13 oz Product measurements were taken using size 9, width M (D). Please note that measurements may vary by size.