Walk into the future of footwear by opting for the Allbirds Tree Dasher Relay: a symphony of innovation and style. Crafted with a seamless one-piece polyester upper for unparalleled comfort. Its polyester lining ensures a snug fit, while the lightly padded heel collar secures your ankle. Experience a smoother ride with the flexible, cushioned midsole. Complete with an EVA insole and outsole for ultimate support and durability. Pull-on tab on the front. Measurements: Heel Height: 8 9 in Weight: 10.864 oz Product measurements were taken using size 8, width D - Medium. Please note that measurements may vary by size. Color: blue