| The ab GLIDER combines two motions: the circular burn and the arc crunch for a fast, fun workout or your abs and entire core. You'll engage more muscle, get a better cardio workout and burn 2x more calories than other ab mahcines. Ab Glider Features Dual Motion Training for double the calorie burn and 44 Percent more muscle activation. Off the Floor Ab Workout gives you proper form to get maximum calorie burn without injuring your neck or back. 180 degree rotation track provides exceptionally smooth lateral motion and locks in place for vertical motion. The incredibly strong and sturdy steel frame and track is built to last a lifetime. Dual Motion Training Provides off the floor ab workout 180 Degree rotation track Strong and sturdy steel frame- Max.user weight: 115kg.