hook & loop Quality grade: 100% nylon,Grade A, Grade B & Grade C. Speicfication: 10mm ... was made of cotton,which proved to be impractical. Nylon and polyester are the fibers most commonly used now. ... 2) Quality grade: 100% nylon,Grade A, Grade B & Grade C.3) Speicfication: ... equipment, curtains, camping equipments, seat pad, wires & cables etc. Colorful Nylon Hook & Loop