The model contains three layers: skin, subcutaneous tissue, and a muscle layer. The training/injection pad can be used for intradermal injections, hypodermic injections, and intramuscular injections. You can inject liquid into it, simply squeeze the pad after use to remove liquid before storing it. The suture practice fake leather adopts a portable design, which is small and light, easy to carry, and you can practice anytime, anywhere This is a versatile training model that will give you the opportunity to practice many times.