A period disc is an internal menstrual hygiene product designed to collect, rather than absorb, menstrual fluid. This device provides an alternative to traditional products like tampons and pads, offering up to 12 hours of protection. The flat, circular design allows it to function differently from other internal options.
Distinctive Design and Function
The period disc features a shallow, flexible collection basin surrounded by a firmer outer rim that provides structural support. Unlike tampons or menstrual cups, the disc sits high in the vaginal fornix—the wider space at the top of the vaginal canal, just beneath the cervix.
The disc remains in position by utilizing the body’s anatomy. After insertion, the front edge of the rim is tucked securely behind the pubic bone, while the back edge rests in the posterior fornix, cupping the cervix. This placement ensures the disc does not rely on suction to stay in place, creating a barrier to collect the flow.
Types and Capacity
Period discs are available in two categories: reusable and disposable. Reusable discs are typically made from medical-grade silicone and can last for several years with proper care. Disposable discs are made from medical-grade polymers and are intended for single use before being discarded.
The period disc is known for its high fluid capacity. Due to its wide, shallow shape and high placement, discs hold significantly more volume than most tampons or menstrual cups. Capacity often ranges from 50 to 70 milliliters, equivalent to five or more super tampons. This capacity is beneficial for individuals with a heavy flow, allowing for longer wear times between emptying.
Practical Guide to Insertion and Removal
To insert the disc, first wash your hands thoroughly. Pinch the flexible rim together lengthwise so the disc folds into a shape similar to a tampon. Get into a comfortable position, such as squatting or sitting, and guide the pinched disc into the vaginal canal, aiming horizontally toward the tailbone.
Push the disc back as far as it will comfortably go until the back rim is past the cervix. The final step is to secure the front rim by tucking it up behind the pubic bone, using a clean finger to ensure it is firmly in place. When properly positioned, the disc should be unnoticeable during daily activities.
For removal, sitting on the toilet can help lower the disc due to changes in pelvic floor muscle tension. Hook a clean finger under the front rim and gently pull the disc out, keeping it level to minimize spillage. Some users experience “auto-dumping,” where the disc temporarily shifts while bearing down, allowing collected fluid to empty into the toilet. Reusable discs should be washed with mild soap and water before reinsertion and sterilized by boiling between cycles.
Key Differences from Menstrual Cups
The period disc differs from the bell-shaped menstrual cup in several fundamental ways. A disc is held in place by its rim tucked behind the pubic bone, relying on anatomical support rather than suction. Conversely, a menstrual cup sits lower in the vaginal canal and creates a suction seal against the vaginal walls to prevent leaks. This difference in mechanism means discs are considered safer for individuals who use an intrauterine device (IUD), as there is no suction force that could potentially dislodge the IUD.
Sizing is another point of divergence. Discs are often marketed as “one-size-fits-most” because the vaginal fornix where they sit is a consistent space. Menstrual cups, however, require specific sizing based on factors like cervix height and pelvic floor muscle strength. Finally, because the disc sits high and does not occupy the vaginal canal, it can be worn during penetrative intimate activity without mess. Cups sit lower and must be removed before intercourse.