Features: brand new and high quality RESPIRATORY SYSTEM MODEL. This Human Respiratory System Model shows the respiratory tract, the oral to the trachea, bronchi and nasal cavity right bronchial tree in the lobes, and the other side is designed with an enlarged alveolar model to show microscopic histological microstructure of the alveoli. HUMAN RESPIRATORY SYSTEM MODEL. Size about 7.5 x 13 inches; Clearly view the main anatomical structures of the Human Respiratory System. Great for educational lectures, patients communication, antomical teaching, REMIUM QUALITY. Adopts high-quality PVC material, corrosion resistant, lightweight, and has high strength. Non-smelly, non-toxic, reusable, eco-friendly, human skin-like deisgn. Extremely realistic, great teaching presentation tools. REALISTIC TEXTURE. Designed to replicate and show the real anatomical structure of human skin tissues. Advanced computer colorful painting, various colors are for distinguish different positions. Realistic human organ structure, not easy to fade, easy to observe and view. WIDELY USE. The professional human respiratory system anatomical model, which is for explaining how human respiratory system working. for Ideal for hospital, doctors office, anatomy classroom, advanced student and clinician, laboratories, schools, and scientific reaserch institutes, educational purposes only. Specifications: Material: PVC Color: Assorted Color (As Picture Shown) Model Size: Approx. 19x33.5cm/7.48x13.18in Weight: Approx. 800g Package Includes: 1 Piece Human Respiratory System Model note: 1.Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!