The CORE Band™ is specially formulated to make your Pilates Based workouts work for you in ways that you haven't thought possible. Try it out today and see for yourself. The CORE Band™ was developed by Kathy Corey, and she is also available to train teachers in the proper use of the core band in Pilates studios world wide. Width = 25 CV Length = 126 CM Construction = 100% Cotton Canvas- 3 pockets for varying widths