In seconds it quickly and securely clamps to the solid footrest of your rigid-frame manual chair or any folding chair using the Freewheel folding wheelchair adaptor. Once attached, the FreeWheel gently lifts your front casters off the ground turning you into a 3-wheel, all-terrain chair. With the FreeWheel you can safely push over surfaces that would typically be impossible! Instead of struggling or popping "wheelies" to go over grass, curbs, or down dirt trails, you can now safely push over almost any obstacle. Not only does the FreeWheel make it easier to push yourself, it makes it easier for anyone who is pushing you and you'll feel much more secure being pushed.