Guaranteed for Life. Virtually Unbreakable Iron lace boot laces are made with 100% Advanced Para-Aramid Fibers that are 20 Times more durable than Kevlar bootlaces. Never sit on the bench again wishing you had a spare set of laces on hand. Just one more reason to love these laces!
Stretch-Free, Non-Slip shoelaces that lace up tight and stay tied.
Non Magnetic - won't set off metal detectors.
9X Stronger than Steel - One pair has an Amazing 1500 lb. breaking strength in a 1/8" (3.2mm) round lace means these will fit most conventional footwear and won't break when pulled tight.

The World's longest lasting lace. Highly Abrasion, Wear, Chemical, UV and Corrosion Resistant.
Fire Resistant - Our laces are heat and fire resistant to 630 F (332 C). Made for firefighting, welding or anyone who works hard and expects their equipment to last.
Waterproof & will never freeze so you can tie and untie your laces even in the dead of winter.
Corrosion and chemical resistant.
Cut resistant & fatigue resistant.
Higher strength-to-weight ratio than Carbon Fiber.

Keen Flint Crew Medium Weight Socks