Urinary catheter for men is a hollow tube that collects urine from the bladder submits it in the drainage bag that is connected to it. The hollow tube is partially flexible and the catheters are made of rubber, plastic and silicone. They are required when the bladder cannot empty on its own.

Usage of catheters or the procedure of using catheters is termed is catheterization, where there is an insertion of a catheter (for men) through the urethra and into the bladder for proper withdrawal of urine. The urine is collected or drained into a closed bag. The purpose of catheters for men is to help those who cannot urinate normally anymore.