Top Material Used: Top quality foam has been used in making this wheel. Pure TPE has been used in the top and bottom of this wheel. Safe for Practice : This ingenious device is specially designed to protect your spine and help you release muscle tension from the most difficult areas of your body, thus dramatically boosting your performance and increasing your confidence. Dimension: Wheel length is 33 cm (13 Inch) and Breath is 17 cm (6.7 Inch). It's thickness is 20 mm with strong and flexible Foam. Improve Flexiblity : Yoga Wheel has been designed to help you Improves body flexibility, back bends, posture, Strenghtens spine, reduces back pain, and provides body stretching And Relieve. Portable and Lightweight: This wheel can be easily moved from one place to another.The weight of this wheel is 2 kg which is light yet strong.