Product Description Made for those who work in harsh or extreme environments, our Heavy Duty lace is made of 100% DuPont(TM) KevlarA(R) fiber to maximize strength and durability and is flame-resistant. Boot Laces in Brown 93020 | Red Wing Shoes at Red Wing Browse all Red Wing deals $18.99 In Stock at Red Wing Price checked 6 days ago Buy Now at Red Wing Secure checkout Easy returns or compare prices Amazon eBay Product Details Brand Red Wing Material DuPont Kevlar Fiber Gender unisex MPN 93020 Red Wing