Think of it as a recliner for reformed couch potatoes. Diamondback Fitness' recumbent models put you in a relaxed position for low-impact workouts that generate great results, especially in the glutes and the thighs. Ample support provided by a full-size mesh seat back, ensures comfort and delivers therapeutic advantages for sufferers of chronic pain, joint injuries, chronic arthritis, stress fractures and pregnancy. The aerobic benefits of the 910Sr and 510Sr Recumbent Bike models for 2015 will help persons at both ends of the fitness spectrum meet their aerobic and muscle toning goals. Each of the models is fully adjustable to dial in a perfect fit for all body sizes.