15x stronger than steel

you can get them untied at -40

The same material as the US army's new bulletproof helmets

no matter what

Unbreakable Boot Laces ship_sb 15x stronger than steelThe toughest laces out there. How? A polymer from a Nobel Prize winning scientist. Theyre lighter than cotton or polyester, and 15x stronger than steel, way stronger than Kevlar. What are they made out of? The same material as the US army's new bulletproof helmets. the polyester jacket keeps knots tied all day, no matter what. They're waterproof so they can't freeze, you can get them untied at 40. Plus they won't rot if you put your boots away soaking