Kevlar reinforced laces are the perfect replacement laces for all working shoe or boot. Even casual shoes can be more comfortable with these high-quality laces. Originally designed for smoke jumpers, This tough design is built right in. The larger diameter allows for an extremely tight tie but will not pinch the instep. The weave design and Kevlar stitching keeps the laces tied better than older laces. Today's Kevlar reinforced laces are suitable for all footwear.