Note: The upgraded version has added Breathing Dumbbell Weighted weights 250g. [Core Strength Training Made Simple ]This versatile muscle trainer is designed to target multiple areas of your body, including abdominal, pelvic floor, and lung capacity muscles. [Compact and Portable for Anytime, Anywhere Workouts]Measuring just a few inches in size, this muscle trainer is incredibly small and lightweight, making it easy to carry with you wherever you go. Whether you're at home, in the gym, or on the go, you can squeeze in a quick, efficient endurance training session without worrying about space constraints. [Ergonomic Design for Maximum ]Featuring an ergonomic design with a comfortable grip, this muscle trainer ensures a pleasant and safe training experience. Its thoughtful construction helps improve breathing control, allowing you to deepen the abdominal burning effect and maximize your workout results. [Perfect for All Fitness Levels Adjustable Intensity]Whether you're a fitness newbie or an advanced athlete, this muscle trainer is designed to accommodate all skill levels. With its adjustable resistance, you can customize the intensity to suit your current fitness level and gradually increase the difficulty as you progress. Color: Black Material: ABS+PMMA Package Contents: 1X Breathing Exercise Device for Lungs Kit 1X Breathing Dumbbell Weighted weights 250g Kit Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.