Martial Arts belt Velcro strap to keep the knot tied in place during the whole training or competition.• Elastic and resistant.• 20cm of length and 4cm of width.• Soft fabric on its back to prevent the belt underneath from tearing.• Ideal to facilitate the instructor’s work during an activity with little kids who didn’t learn yet how to tie their Martial Arts belt properly.• Contact us to customize your Martial Arts belt Velcro strap.