[Strength slider to train the muscles of the whole body] Challenge your erratic workouts with the TRNR Strength Slider to improve your core stability, overall strength, range of motion, and cardio endurance. Allowing you to slide in any direction without restrictions, the Strength Slider allows you to work multiple muscles at the same time, and you can train your deep abs, back, and pelvic floor muscles for greater stability throughout your range of motion. This two-piece set of strength slides is versatile for any fitness routine and allows you to work your full body workout almost anywhere. It has a double-sided design, so it can be used on a variety of surfaces. Smooth surfaces are suitable for carpets and lawns, while textured surfaces are suitable for hardwood, laminate and tile floors. You can adjust the difficulty of the exercise by widening or narrowing the width of your feet and hands, and it is suitable for all fitness levels.