This system is good for full frames with any larger zoom or prime lenses.
The Glidecam HD4000 is a lightweight, hand-held camcorder stabilizing system. This system is upgraded from the 4000 Pro and offers fine adjustments and an improved gimbal and balance system.
Camera stabilization systems like this one work to provide camera stability during movement for dynamic and subjective camera shots. It utilizes a balancing system that dampens the user's body movement, providing a smooth, floating moving image appearance usually achieved with more expensive equipment.
Here is a great video on how you can balance the Glidecam: