Leather, chrome, and magnets: Easy clip on medium to heavy Expressive drum dampening- 4 different settings... or flip it up and off the head for full open tone. Flexible by design to match a drummer's natural dynamics. Patented clip for permanent grip to all standard metal hoops and 1/4 inch wood hoops. Genuine USA Leather. (about 10 inches across) MAGNETIC flexibility. Nothing sticks to your head- keep it open and real. Will never warp, kink or unstick.