Benefits and value Demonstrates diaphragm movement and lung function for biology classes and healthcare applications training, helping students understand breathing mechanics in real time. Transparent lung lobes and a Yshaped trachea provide clear visualization of respiratory mechanics during experiments, making concepts easier to grasp. Easy to use: inflate and deflate the lung lobes using the elastic rubber bottom to illustrate how chest cavity volume changes with breathing. Lightweight and portable, at 290 g, enabling easy classroom demonstrations and onsite lab use. Key attributes Function: Educational lung model for anatomy and physiology education and clinical training. Compatibility: Suitable for biology classrooms and healthcare training programs; designed for standard classroom and lab environments. Size and weight: Lightweight and compact device weighing 290 g for easy handling and setup. Materials: Elastic rubber bottom for inflation and deflation; transparent lung lobes; Yshaped trachea for visible respiratory pathways. Performance: Simple, reliable operation that supports visual demonstration of breathing mechanics. Use scenarios Biology classroom demonstration: Show diaphragmatic movement and changes in chest cavity volume by inflating and deflating the lobes to illustrate normal breathing processes. Healthcare training session: Observe airway structure and breathing mechanics during simulated patient scenarios, aiding comprehension of respiratory function. Respiratory physiology lab activity: Conduct experiments that require clear observation of how thoracic volume changes affect lung inflation and exhalation during different breathing patterns.