1.Visualized learning process: Illustrates the mechanical processes of inhalation and exhalation through comprehensible movement sequences supports educational teaching of respiratory physiology with focused functional representation 2.Robust material: Highquality material guarantees pleasant haptics and stable structure for longterm use. The resistant construction preserves form and functionality even under intensive use, ideal for frequent applications in training and demonstration areas without loss of quality 3.Cognitive stimulation: Activates neural networks through targeted breathing exercises promotes sustainable problemsolving skills as well as quickreaction movement control 4.Interactive study object: The didactically optimized model supports competency acquisition in human biology through its userfriendly design and creates motivating learning situations for sustainable knowledge retention 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.