These tubes are made of polyurethane (PU) so that the flexibility of the tubes is not affected by temperature and they have a long lifespan. The tubes are smooth and easy to use. The rounded-edged nasal tip reduces the risk of tissue damage. The other end is designed and corrugated to provide a secure and easy connection with both the stomach pump, funnel, and activated charcoal bottle. Easy to clean and can withstand all regular disinfectants. Painless side holes (2)