Closed system catheters are specially designed so that the catheter can be introduced into the urethra using a special tip. This tip enters the urethra first, followed by the catheter, which can then bypass the area of the urethra with the most bacteria: the urethral opening. The catheter is housed inside a collection bag which directly catches the urine flow. Since it is housed inside a closed bag, it is not touched by an individual's hands. The idea is to reduce infections since the entire procedure is closed. Individuals at a higher risk of infections may benefit from use of a closed system catheter.