More informations of sit-up aids:

1. The body is mainly made of solid steel material which is hard and durable for long service life.

2. The height of the foot barrier has 3 adjustable gear positions to meet different family member fitness requirements. 

3. Wrapped by high-density elastic foam to better protect your feet from pain and injury. 

4. The bottom is a large silicone chassis with strong suction to keep it stable when you do fitness and workout. 

5. Compact and lightweight, with easy installation, you can take it anywhere to train your abs, tummy, legs anytime.