The Un Tread OnGTX is part of the Clarks Unstructured Collection. Say hello to the Un Tread OnGTX boot featuring a leather upper with a suede collar, lace-up closure, and a waterproof GORE-TEX construction. Breathable textile lining and removable cushioned OrthoLite footbed. Shock absorbing EVA midsole and durable rubber outsole. Imported. Measurements: Weight: 1 lb 6 oz Shaft: 4 3 4 in Product measurements were taken using size 11.5, width D - Medium. Please note that measurements may vary by size. Weight of footwear is based on a single item, not a pair.