Description:1. Unique 3-Wheel design adds to overall stability of rolling motion， making this perfect for beginners2. Floor stopper wedge included to improve workout safety and enable a wide variety of workouts at full range， a standalone stopper wedge is included. Position it at your tolerance edge to be stopped exactly where you want and still have the strength to return the motion3. Comfortable rubberized soft grip handles minimize hand fatigue while remaining slip-free even in the sweatiest home exercise situations4. Premium materials & construction， highly durable; an included foam knee pad provides extra comfort5.Rapidly strengthens & tones your entire body by hitting your Abs， Core， Torso， Shoulders， Arms， Upper Back & Lower Back