Improve your lung performance with our odorless lung exerciser! Its practical and functional design, coupled with its compact size, makes it perfect for athletes, singers, dancers, and more. The device provides a perfect seal, allowing you to get the most out of your workouts and boost your lung capacity. Specifications: Material: Silicone Weight: about 44g Product Size: about 3.94*2.17*1.97inch (10*5.5*5cm) Packing List: 1pc* Breathing exercise for lungs Notes: 1. Due to the lighting effects and photographing angles, there is a color difference in the product, please understand. 2. Due to manual measurement, there is a tolerance in the product size.??Increase Body Performance?: Breathing Trainer for Lungs makes an excellent exercise tool to build up your breathing and abdominal muscles, so you can strengthen overall performance.Improve your lung capacity easily with this compact and lightweight device that fits in your backpack or pocket. This breathing trainer for lungs has a portable design that lets you exercise your lungs anywhere, anytime. ??Lung Capacity Enrichment?: Lung Endurance Trainer can help you significantly boost your lung capacity by reducing the buildup brought on by bodily waste.Take your performance to the next level with this lung exerciser expander. Ideal for athletes, singers, dancers & more, it's perfect for swimming, diving, surfing, running, fitness, and other activities. Enhance your breathing capacity. ??Functional and Effective?: Our lung exerciser device has a comfortable fit and a perfect seal which ensures optimal breathing exercises. This device is easy to use and fits all mouth shapes, making it the ideal choice for improving your breathing. Lung Exerciser Device strengthens your lung capacity and helps you adjust the abdominal muscles, therefore allowing you to exercise core muscles. ??Increase Your Endurance?: Helps you get better endurance, Breathing Exercise for Lungs is able to improve your breath for better feelings day by day. Our lung exerciser device utilizes high-quality silicone materials that are healthy, safe, and odorless, providing a reliable and durable means of exercising your lungs for improved respiratory strength. ??Optional Resista-nces?: Deep Breathing Lung Exerciser allows you to find the right resist-ances level for your training and adjust accordingly, since it is designed with adjustable resi-stances.Experience the benefits of practical and functional breathing exercises with this adjustable resist-ances device. Improve your endurance, overcome shortness of breath, and boost lung capacity.