Please click for the El Naturalista size chart. The El Naturalista Volcano N5575 chukka boot is an instant classic. The durable leather upper is flexible while still maintaining a natural finish. The shoe has an adjustable lace-up closure at the instep for easy and secure wear. Leather lining and leather footbed. Features a comfort last designed to mold to the shape of your foot. Durable rubber outsole. Made in Spain. Measurements: Weight: 1 lb 3 oz Shaft: 5 1 2 in Product measurements were taken using size 40 (US Women's 9), width M (B). Please note that measurements may vary by size. Weight of footwear is based on a single item, not a pair.