1. Unique knotting training design, made from transparent materials, and three different types of cylinders constitute various knotting training space;
2. The simulative vessel can be filled with simulative blood and it’s easy to make replacement.
3. Alarm warning system will be triggered for overexertion, and it supports unstressing knotting training.
4. Special groove design, portable and easy for installment and replacement.
5. Supports repeated practice.
