Hook and Loop Fastener is 100% nylon. One strip has a surface of minute hooks that fasten to a another strip (or fabric) that has a surface of uncut pile.
Hook and Loop Fastener is sold by the yard.
This is Loop. It does NOT have an adhesive backing. You will need to sew this into place. It has a surface of uncut pile and will stick to a corresponding strip of Hook (purchase separately).