SportsArt Status Series delivers 7 pieces of selectorized strength designed specifically to target the muscles in the lower body. Users can train on products that engage the gluteal, quadriceps, hamstrings and calves in a single movement or choose products that target these muscles individually for higher intensity. Spring-assisted seat back adjustment supports users of different sizes; Angled seat bottom reduces lower back stress; Adjustable leg pad accommodates different leg lengths, allowing users to achieve proper leverage; Incremental 3.5 and 6.5 lb (1.58 and 2.9 kg) micro-loading adjustments; Cold rolled steel weight stacks with noise dampening; Stainless steel guide rods resist rust and stay smooth; Kevlar belts for quiet, smooth action and optimal tensile strength; belt contains 2200 lb (998 kg) tensile strength aircraft cables; Marine-grade double stitched upholstery.