Here is another core trainer that helps you work your body hard. The Wonder Core Sway N Fit has a u-shaped track that helps you isolate your ab muscles. You can perform over 20 moves on it. With the companion smartphone app, you can get more of this fitness trainer.
The Wonder Core Sway N Fit weighs 5.2kg and has max weight capacity of 120kg. You can find out more about it here.