-MULTIFUNCTION: This sit up bench with twist waist disc and spring boostercan help you with integrated-style exercise such as sit ups, lying leg raises, and rally training. You can easily exercise your arms, legs and hips muscles. -ADJUSTABLE: This sit up bench features backrest whose tilt angle can be adjusted from 52-60cm. And the popliteal pad support can be adjusted to 3 different heights to meet your different fitness needs. -MULTIPLE PLACES OF USE: This bench is easy to move and does not take up space, you can place it at anywhere like home, office or gym for exercise. -COMFORTABLE AND ERGONOMIC: Comfortable high-density foam padded bars and backrest can effectively keep your legs position and offer comfort. Except for that, our bench conforms to ergonomic to provide a more scientific and effective exercise. -DIMENSIONS: Overall Dimension: 53W x 166D x 52-60H cm. Backrest Size: 30W x 110D cm. Twisting waist disc ? 27 cm.