Flat shock cord straps that minimize pressure and maximize friction. They won’t accidentally ‘roll’ to either side like a conventional round cord. Stretchier and stronger cargo securing technology. Durable 100% natural rubber core and a tightly woven wear-resistant polyester sheath. Built for extended outdoor use. Classic has shatter resistant Fastex® buckles that won’t scratch your bike’s paint (3/4" wide / Adjustable Classic is 1" wide). Universal is a strong, safe, shank-hooked super bungee (3/4" wide / Adjustable Universal is 1" wide).