The Doc N Roll is the World's First Anti-Gravity Foam Roller! A revolutionary, self massage break through!The Doc N' Roll is the world's first anti gravity foam roller! It allows you to use your own bodyweight as leverage to work through your muscle kinks and knots! It comes with a full body self care program to accelerate recovery, prevent injury, and allow the body to move more efficiently. Premium grade aluminum Adjustable strap for height Detachable foam roller Smooth wheel bearing glide Compression tested to withstand 600lbs Travel friendly (<10lbs)