Hack squat BL303 exercise machine is designed for training leg muscles. The equipment is necessary for the physical training of athletes involved in various sports. It is effective for building up the quadriceps, especially in the outer area. The carriage mechanism is assembled on 6 bearings, which eliminates distortions and ensures smooth sliding. Safety is achieved due to the supporting platform and mechanical stopper. Upholstery: high-quality eco-leather. Filler: two-layer foam, resistant to deformation. Painting: powder paint.