A menstrual sponge is an internal protector made of a spongy and very soft material (it can be natural or synthetic). It adapts perfectly to the shape of your vagina and absorbs the flow very discreetly. Unlike common tampons, it has no string, which makes it invisible under clothing or bikinis. It's an option for those seeking maximum comfort and wanting to try something different from traditional methods. Always remember to follow usage and hygiene instructions!