Made in the USALaceSTRONGER THAN STEEL: Our durable, 100% advanced para-aramid fiber replacement lace is 10x stronger than steel; Amazing 1500-pound breaking strength/pair and a inch (3.2mm) diameter means they will fit any boot and will never break when pulled tightA PERFECT MATCH: Use with almost any brand and style of shoes or boots; Our tough, unbreakable laces are colored to match up to 99% of the most common black and brown boots on the market and trusted by hundreds of thousands of loyal customers. Measure old laces to determine size needed for new lacesSTAY PUT & STAY COMFORTABLE: Stretch-free, non-slip shoelaces lace up tight for a strong fit that stays tied; Once you put them on, stays put and stays comfortable whether youre on the job site, trekking through snow, or hiking a mountainGUARANTEED FOR LIFE: Long-lasting, durable laces field-tested in the most abusive environments; They are 20x longer-lasting than Kevlar laces, and proven to be damage, cut, abrasion, wear, chemical, UV, and corrosion resistantWATER, HEAT & FIRE RESISTANT: shoelaces are waterproof, fire resistant, and heat-resistant up to 630 degrees Fahrenheit/332 Celsius; The ideal laces for firefighting, welding, or anyone who works or plays hard and expects their equipment to last