The TurfCordz Resist-Assist provides resistance training in multiple directions for two athletes. Used for core strength and agility workouts for greater acceleration and explosiveness through start drills and power-building footwork exercises. The TurfCordz Resist-Assist features two looped belts that are connected with a 10ft/3m heavy-duty nylon strap. Allowing athletes and/or a trainer to resist movement. Non-adjustable belts fit up to a 52in/1.3m waist. No removable components or replacement parts. Not interchangeable.