Prevent your freestanding bag from sliding and shifting during training with the Bag Ring Mat and Bumper Kit. This kit is the perfect training tool to help keep your freestanding bag directly in front of you. No more sliding or adjusting the bag in the midst of training. Includes: One Round Rubber mat and four plastic bumpers. Compatible with the Original Wavemaster, Powerline Wavemaster, Uppercut Wavemaster, BOB, BOBXL and Torrent T1 and T2. Bag sold separately. Mat Dimensions: 28.5"Mat Weight: 6 lbs