Build your muscle with Body Builder, we ensured that the quality and design matches your daily workout requirements. Ten minutes a day, 6 levels of strength can be adjusted, step by step, let you change. Boys, they can use this exercise to get eight abs, arm muscle lines, Latissimus dosi firming buttokcs. Girls can use this exercise to get thin arms, enlarge breasts, waist, abdomen, lift leg lines, and buttocks. Anti-bully bottom, elastic rubber rope, professional sliding plate. Material: ABS/PP, Hose: High flexible tube