This patented, uniquely designed, resilient, durable 'two-in-one' foam roller is one of the most versatile foam rollers available. While its rounder side increases roller movement, its flatter side decreases movement. With the flatter side down, it can be sat on and stood on for balance related movements, while placing the rounder side down provides a more challenging, dynamic workout. In addition to functioning as a therapeutic aid for rehabilitation and balance training, the SMARTROLLER® can be used as an exercise prop for a variety of disciplines, including Yoga, Pilates and Feldenkrais®. Dr. Feldenkrais, a physicist and martial artist, originally introduced the foam roller to assist sensory motor learning and to promote higher states of body awareness. Building upon his ideas, the SMARTROLLER delivers an improved integrated experience to deepen motor learning. The SMARTROLLER can be cleaned with dishwashing detergent or laundry detergent and a wet cloth. Approximately 36" x 4" Check out Stacy's lecture that she created for Movement Lectures called Foam Roller Methods for Optimal Posture and Movement Organization. The lecture will introduce new ideas on sensory motor learning and fascial rehabilitation to novice and sophisticated foam roller users.