A dual-purpose fitness equipment designed to strengthen both the abdominal and lower back muscles. With its adjustable resistance and ergonomic seat design, users can perform both crunches and back extensions on the same machine. It targets key core muscles such as the rectus abdominis and obliques during abdominal exercises, and the erector spinae, multifidus, and glutes during back extensions. Ideal for building core strength and improving posture, this machine is perfect for full core training in one compact setup.