Description: Quality Material: This sit up assistant device is made of steel, foam, and PU leather. The thick foam padding provides a soft and comfortable experience.Adjustable Length: With four levels of height adjustment, this ab exerciser is suitable for teenagers, students, and adults. It's an ideal choice for beginners and can be used by the whole family.Anti Slip Design: The sit up board features a non slip design that offers stable support during use.Apply: 130 to 150cm is suitable for individuals up to 174cm in height and 148 to 168cm can accommodate those up to 190cm tall, catering to different height requirements.Compact and Portable: This fitness equipment is small in size and lightweight making it easy to store without taking up much space. Specification: Material: Steel, Foam, PU Leather Size Chart: Length: 130cm to 150cm/51.18inch to59.06inchWidth: 30cm/11.81inchHeight: 9cm/3.54inchFoot Pad Height: 22cm/8.66inchMat Size: 90cmx30cm/35.43inchx11.81inch Package Includes: 1 Ab Exerciser Note: Please allow slightly errors due to manual measurement and different monitors.