Bump Up the Volume by hairdo is a one piece clip in volumizing extension made with heat-friendly synthetic hair. It instantly creates lift & volume at the crown where you need it most. Its half-circle base has 4 pressure sensitive clips which secures firmly in place without damaging your own hair. There are also five flexible wires built in to the base which allow you to push up for extra height. Bump Up the Volume is made with Tru 2 Life Heat Friendly Synthetic hair & can be styled using heating tools, not to exceed 350 degrees. The overall length measures 21 inches from top to bottom & can be cut & styled to blend with hairstyle. This product takes 3-5 working days to be dispatched & NOT AVAILABLE FOR NEXT DAY DELIVERY.