The GentleCath Air for Men is discreet, portable and offers superior comfort Discreet, portable and offers superior comfort. Designed for a faster, cleaner and more comfortable cathing experience FeelClean Technology is packed with innovative features that make it easier and more comfortable to use, whether you are at home or on-the-go.  FeelClean Technology is designed to protect the delicate urethra, preserving its role in UTI prevention.