Double Exercise Roller + Mat – an excellent double exercise roller. Perfect for training the abdominal, back, arm, and chest muscles. It is also suitable for rehabilitation and corrective exercises. Excellent for both the gym and home use. The handle features a metal frame and non-slip rubber grips. The wheels have treads, preventing them from slipping. Exercises with the roller are excellent for improving overall fitness. Very easy to use. If you are a beginner and are having trouble with the roller, you can spread the handles and wheels slightly to the sides, making the whole unit more stable and the exercise easier.
How does it work?

Exercises with the roller involve rolling the wheel forward across the floor—as far as possible—and then returning to the starting position. You can exercise while standing, sitting, or kneeling. A special knee pad is included in the set to protect your knees from pressure marks!
summary:

* easy to use
* knee pad
* dual wheels
* non-slip handles
* wheels with tread