Efficient Abdominal Training With the Ab Wheel BlackThe Ab Roller from Gorilla Sports is suitable for abdominal muscle training in a small space. You need very little space and protect your knees thanks to the included knee mat. By training your abdominal muscles, you strengthen your core. You get a flat stomach and prevent back pain at the same time.The Ab Wheel Training Device From Gorilla Sports in DetailFor a slim waist: The Ab Roller Black weighs 650 g and rolls on a rubberised running surface. Its soft, rubberised handles guarantee optimum training comfort. With the included mat, you can train on hard surfaces without damaging your knees and only need 2 x 1 m of space for your abdominal muscle training.Effective Abdominal Training in a Small Space With the Ab Roller Whether you are training your abdominal muscles for a flat stomach, a slim waist or a six-pack, the basic rule for optimum training success is that you first boost your circulation by warming up, then perform the abdominal muscle training in several sets as a second step and finish the training with stretching exercises.It is handy, light and effective: The Ab Roller Black at a glance: Own weight of 650 g Optimum rolling thanks to rubberised running surface Optimum comfort thanks to padded handles Neutral due to black colour scheme Dimensions (width x diameter): 27 x 18 cm