Description: Optional Instrument:3 Ball Device:3 color coded balls, 2 in 1 equipment, Exhale upright & inhale UP SIDE DOWN, Exhale 1-9 gear, Inhale 1-9 gear;Expectoration Device:Aerodynamic design, more convenient for expectoration, combined use of airway vibration and PEP. Breathing Trainer: Helps you breathe correctly, train you to take deep breaths, help you open and clear your airways, helps prevent upper respiratory tract such as mucus accumulation, asthma, etc. Vital Capacity Exercise:The more breathing exercises performed properly, the more efficiently the lungs deliver oxygen to the entire body, not only strengthen the respiratory system, but also prevent lung . Easy to use:Can be dismantled for washing, cleaning and disinfection. Portable: Lightweight to carry and clean, easy to put in a bag and carry it with you. You can use it at home, A simple exercise can keep your lungs healthy. Specification: Material: PVC Applicable scene: breathing trainer Package Includes: 1 Piece Breathing Exerciser(2 Pack) Note: Insert the breathing tube into the air inlet. Make sure it is firmly connected. Then connect the mouthpiece to the other end of the breathing tube. Next, put the mouthpiece in your mouth. Seal your lips tightly against the mouthpiece. Breathe slowly (deeply inhale) while your lips are still tightly sealed around the mouthpiece. Hold your breath for 3 seconds before removing the mouthpiece. Then exhale slowly. Take a breath and start the cycle again. Your goal is to try to blow the ball as high as possible. First, you may be able to lift the ball in a short distance. But as you continue to practice, you will be able to breathe more air.