The New Dr. Martens Calamuslo ST (Black Hi Buck 1) Men's Shoes, male, Shoes , Closed Footwear , General Closed Footwear, UK 5 (US Women's 7) D - Medium, true, Stay protected on the job in the Dr. Martens Calamuslo ST boot. Breathable mesh upper with synthetic overlays. Lace-up closure. Safety toecap. Moisture-wicking lining. Molded SoftWair footbed features antimicrobial treatment. Anti-static properties. Flexible EVA midsole. Heat resistant high-traction rubber compound outsole. SRC-rated slip resistance. External rubber toe bumper provides added protection and durability. Standard: ASTM F2413-11 MI/75 C/75 SD Imported. Measurements: Weight: 1 lb 9 oz Product measurements were taken using size UK 13 (US Men's 14) width D - Medium. Please note that measurements may vary by size. Weight of footwear is based on a single item not a pair. (Docs Martins)