Protection Racket 20 x 12 Bass Drum Case One Piece Construction: Effortless to use, no need to muck about with lids, buckles, and straps The Stitching Thread: Bonded nylon that doesn't deteriorate and holds the case together - even if an area of stitching is breached Double Stitching: To first complete the wall and two ends separately, and then to join them together; giving twice the security at the corners and edges for greater protection and durability