Enhanced Breathing Experience: Our Lung Exerciser Device features 3 stainless steel balls, offering broader applicability for all your breathing exercise needs. Convenient and Portable: With the included hanging strap, taking your breathing exerciser on-the-go has never been easier! It's perfect for home use or travel, ensuring you can maintain your lung health wherever you are. Durable and Safe Materials: PP material, our breathing exercise device for lungs is built to last. It comes with 3 waterproof, rust-resistant steel balls, and is fully detachable for easy cleaning and use. Effective Breath Enhancer: our device promotes improved airflow. Users experience significant relief from breathlessness and effective mucus clearance after just a few sessions! Lightweight and Sealable Storage: our breathing exercise device is lightweight and easy to carry. It's a must-have for anyone looking to enhance lung function in comfort, whether at home or on your travels! Colour:White Material:plastic Package Contents: 1 set * breathing exercise device 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.