Features: 1?3 Balls: Deep breathing trainer with 3 different sizes of ball, can be trained in stages, gradually improve your lung capacity. 2?Detachable Wash: Breathing trainer designed with detachable parts, you can easily take them apart for cleansing, and assemble them back. 3?Portable Size: Handheld breathing trainer is good for lung health, small in size for easy to carry, which can be used at home or office. 4?Daily Use: Lung breathing exerciser is the perfect solution for long term breathing problems, use 5?10 minutes once or twice a day. 5?Excellent PP: Handheld breathing exerciser is made of PP material, safe and sturdy, which can effectively improving your breathing. Item Type: Breathing Exerciser Material: PP Package Included: 1 x Breathing Exerciser 3 x Balls 1 x&nbspReplacement&nbspSilicone Head 1 x Manual 1 x Storage Box Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-YJL official store