... of nylon/polyester 3Greatforpackage binding,luggage,toys,sports equiment,garments ect,durable 4SGS/RO velcro(hook and loop/Velcro tape) Features ... some was made of cotton,which proved to be impractical.Nylon and polyester are the fibers most commonly used now. ... specialized in manufacturing all kinds of nylon velcro tie, hook&loop,elastic velcro, velcro tape,velcro straps,self- adhensive velcro, velcro ...