Embrace ethereal comfort wearing Allbirds Tree Runner. Crafted from silky eucalyptus fiber, these sneakers offer a cool, breathable experience. Polyester lining and upper, lace-up closure, and cushioned midsole ensure day-long support. EVA insole. EVA outsole. Measurements: Weight: 1 lb 4.776 oz Product measurements were taken using size 8, width D - Medium. Please note that measurements may vary by size. Color: metallic