ION Roof Straps are made of super solid webbing and feature heavy-duty metal buckles with protective neoprene flaps—guaranteed to keep everything in place and to provide a safe ride for your equipment.
I was thinking of a slightly thicker, more durable material because it stretches a little more than I expected. This is mostly annoying to me because although it is good in width, the waist and sleeves are longer, so it feels even more stretchy when I put things in the back pockets. I hope it doesn't stretch in the material either.