As long as you like. We designed our incontinence products for men to help them recover the confidence to go about their daily activities without worrying about leaks. For a better experience with the Pacey Cuff, always empty your bladder every 1 to 2 hours, before it becomes full, to avoid discomfort.Unlike a penis clamp which blocks blood flow and damages penile tissue, we designed the Cuff to compress the urethra without harming you. If you'd like to try it at night, ask your doctor first and ensure you use a slightly looser setting while still taking regular bathroom breaks every few hours throughout the night.Finally, ensure you discuss the need to use our incontinence products over 24 hours with your physician.