Boards4Health Multi-Slant Board Pro 15.5 inches wide by 16 inches deep Unique, safe and simple angle locking system at 10, 20, 30 and 40 degrees allows you to accurately track your progression Highly durable and stable lower leg stretching device is a natural choice for athletes, therapy clinics and sports teams Used for both prevention and rehab Non-slip top and bottom surface and folds flat, less than two inches thick, for easy storage and portability