Sunny Health & Fitness SF-BH6422 Power Ab Bench Strengthens abdominal, lat, oblique, lower back and core muscles Features 9 total adjustments (3 rear, 3 front and 3 backrest tube adjustments) for total comfort and support Ergonomically designed back support, with a unique spring that enables users to perform multiple sit-ups Foldable for easy storage Durable light weight heavy duty steel frame, with 300 lbs. user weight capacity