Ab Coaster CS1500, Ultimate Ab Workout, Six Pack Exercise Machine for Home As Seen On TV Upgraded 2016 Model - All-Steel Construction - Stainless Steel Rails - Ultra-Glide Nylon Rollers The Ab Coaster CS1500 promotes core stabilization while exercising the abdominals through a full range of motion. The curved track mimics natural spinal flexion, allowing anyone to perform an abdominal lift in perfect form, regardless of fitness level. Steel Bearings - Vinyl Covered Molded Foam Arm Pads - Adjustable Hand Grips Free-style Motion Seat - 400 lb. User Weight Capacity - 30 lb. Weight Plate Capacity Easy-Move Casters