About this product: ● This is an abdominal muscle roller that allows you to perform本格的な筋力トレーニング (authentic strength training) at home. It's a simple movement of extending and contracting with both elbows on the main unit and knees on the floor, so people of all ages can easily try it. You can naturally maintain a plank position, so you can train various parts of your body with just one unit, including abdominal muscles, pectoral muscles, latissimus dorsi, biceps, biceps femoris, and gluteal muscles. ● The abdominal muscle roller can be used at different levels, from beginner to intermediate to advanced, depending on your posture, extension distance, inclination, and weight distribution, so it is also recommended for advanced trainers. If you have an abdominal muscle roller at home, you can start training at any time without worrying about your clothes. This is the perfect training equipment for those who have been pointed out in a health checkup, want to review their current diet, want to save time and money on going to the gym, or are looking for a workout they can do alone. ● The abdominal muscle roller has two thick wheels vertically, and its appeal is its stability that prevents deviation to either the left or right. The wheels are equipped with an auto-return function, so even beginners who are not yet trained enough to return on their own or are not yet used to using it can smoothly return from a difficult position. Furthermore, the handle tip is equipped with a timer, so you can improve exercise efficiency by setting goals and training. ● A knee mat is also included in the set to protect your knees during training. The surface is textured with a bumpy finish, providing excellent stability and a non-slip function. Furthermore, it is designed to be thick, so it is difficult to feel the impact on the floor even when force is applied, and it is a mechanism that reduces the burden even when training with your knees always on the floor. ※ 【Set Contents】Abdominal muscle roller x 1, Timer x 1, Knee mat x 1 【Size (approx.)】Abdominal muscle roller: 45cm x 37cm x 22cm 【Color】Abdominal muscle roller: Black, White ※ You can choose your favorite color.