Angled robust design for accurate training. Carriage travels on linear bearing for friction free & smooth performance. Big non-skid high quality rubber foot platform for trouble free workout. Unique design allows traditional squat exercise for better isolation of quadriceps with safety of a back support pad. Ergonomic adjustable seat protects lower back. Inbuilt plate holder allows easy loading & unloading of weight plates. A stopper minimizes risk while performing exercise.