Clean-Cath is a brand of intermittent catheters made from uncoated PVC, also known as vinyl. Many of these catheters have a color-coded funnel at the end that prevents you from having to touch the catheter itself. Clean-Cath catheters are individually wrapped in a peel-strip package that is easy to open. These intermittent catheters are available in straight, coude, and olive tip styles.