VIAHART Abdominal Muscle Exercise Wheel with Foam Mat to Prevent Knee Pain! Includes a mat for your knees! Easy Assembly! Exercises your core and abdominal muscles without hurting your knees! Very durable!! SIZE AND WEIGHT | Product Measures 6 x 11 x 6 in inches | 15.3 x 28 x 15.3 in centimeters | Product Weighs Approximately 1 lbs / 0.5 kgs | These dimensions and weight do not include the packaging 30 day no questions asked return policy and FREE returns! | Watch our video to learn more about this product: youtube.com/watch?v=A36FtY9R7m8