Valena boots are designed for flat work or turnout. The durable marine vinyl outershell and WoolBack™ fleece lining combine to make a comfortable, long-lasting boot. Extra-wide elastic maintains its stretch over hard use and many washings, keeping the boots securely in place without adding pressure points. Sold as a pair. Made in the USA. Marine vinyl has high abrasion-resistance and will not mold or mildew. WoolBack™ 100% machine washable virgin wool retains its pile and will not clump or flatten. Made in the USA. Easy Care: machine wash warm, tumble dry low or line dry. FRONT BOOTS Top Width (in.) Middle Width (in.) Bottom Width (in.) Overall Length (in.) Small 9 9.5 9.75 9.5 Medium 10 10.5 11.5 10 Large 10.5 11.5 12 10 X-Large 11 12 12.5 10 To measure, lie boot flat. Top Width - measure width within 1/4" of top edge. Middle Width - measure at widest. Bottom Width - measure width within 1/4" of bottom edge. Overall length - measure top edge to bottom edge in center.