Meet the Glute Coaster from the Abs Company: a lower body training machine that isolates your glute muscles and helps you tone your butt without putting unnecessary stress on your body. It has a down and back motion to get the job done. The Glute Coaster can be loaded with weight plates for up to 170lbs workout intensity.
The above video shows the Glute Coaster in action. It measures 69″ L x 34″ W x 67″ H. You can find out more about it here.