Owaho brand laces are high quality, American made, heavy duty shoe / bootlaces. These strong laces are reinforced with Dupont™ Kevlar®. These reinforced laces are braided from polyester with a polyester core and reinforced with Dupont™ Kevlar® intertwined in the outer polyester braid. These laces are approximately 3/16" to 1/4" in diameter, with tipped ends. Please check to ensure your boot eyelets can accommodate these thick, heavy duty laces.