Do I need to wear a pad or tampon with them? Customer Support February 08, 2020 02:15 Updated Follow Nope! Our undies were built to completely replace pads and tampons. Related articles How much fluid do they hold? What does the booster do? How do your period undies work? What if I need to change my booster while I'm out? How do I wash my Aisle undies? Comments 0 comments Article is closed for comments.