HIKING BOOT LACES - MT. RAINIER DARK BLUE - 60 INCHES - WATERPROOF Two 60 Inch Strong Polypropylene laces. - Redesigned tips of flexible Polyolfin - Heat shrunk for permanet fit National Leash is the sole distributor of this product - Look for the yellow banded trademark Extremely strong with great knot holding power. Waterproof. This special lace material is specifically manufactured for National Leash Made in USA by veteran owned company.