Tumbl Trak Floor Training Bar, 4ft The Floor Bar can be used in many creative ways with other Tumbl Trak products where bounce to handstand drills can be practiced The metal base of Tumbl Trak's Floor Bar has Velcro on the bottom to allow for easy attachment to carpet Practicing control of the handstand, which is probably the most essential skill in gymnastics, is less stressful on athletes wrists when using our 4 long floor bar