Menstrual Disc vs Period Underwear: Which is Right for You?

Date Created: 27th of August 2025
Read Time: 6 minutes

A 2024 Choice Australia survey found that one in three Australian women have tried reusable period products, with many now exploring more than one option (source: Choice, 2024). Menstrual discs and period underwear are two of the most popular choices. Both claim to offer comfort, protection and sustainability. But how do they compare, and which might be better suited to your lifestyle?

How menstrual discs work

A menstrual disc is a flexible, reusable product designed to collect menstrual fluid. It sits in the vaginal fornix, just below the cervix. Unlike tampons, it does not absorb, which helps maintain natural moisture balance.

The disc can be worn for up to 12 hours, making it suitable for day and night use. For those with heavy flow, a menstrual disc with high capacity can reduce the stress of frequent changes.

The my mimi menstrual disc is available in two sizes. The Small holds 32ml, and the Large holds 61ml, making it one of the largest options available in Australia. Over its five-year lifetime, the average cost works out to just 83 cents per month, providing an affordable menstrual disc option compared with disposable products.

How period underwear works

Period underwear looks and feels like regular underwear but has built-in absorbent layers. It captures menstrual fluid and locks it away to prevent leaks. Depending on the brand, capacity varies from the equivalent of one tampon to up to four.

Unlike discs, underwear needs washing after each wear. While convenient for some, this means longer drying times and the need for multiple pairs. For women with heavy periods or unpredictable cycles, this can add extra costs.

Comparing comfort and convenience

Menstrual disc comfort

The smooth design of a reusable menstrual disc offers a low-profile fit. The my mimi disc also includes a loop tab for easy removal. Once in place, many users report they cannot feel it. For those with an IUD, guidance from a doctor can help confirm whether a menstrual disc compatible with IUD use is suitable.

Period underwear comfort

Period underwear feels familiar since it is worn like regular clothing. For light to moderate days, it can feel effortless. However, some users note that it may feel damp after several hours or during heavy flow days.

Environmental and financial impact

Reusable options reduce waste compared with pads and tampons. A single my mimi disc can replace thousands of disposables over its lifetime. That means fewer products in landfill and a smaller environmental footprint.

While period underwear is also reusable, it often requires several pairs to cover a cycle. This increases the upfront cost. A disc, by contrast, is a single purchase. Over five years, my mimi users spend less than $50, compared with several hundred dollars on underwear alone.

Recognition such as Best Sustainable Period Care Solution in Australia 2025 highlights my mimi's leadership in creating eco-friendly menstrual disc purchase options for Australians.

Lifestyle considerations

Active women often look for flexibility. A menstrual disc for active lifestyle can be worn while running, swimming or practising yoga. It also supports mess-free intimacy, which underwear cannot provide.

Period underwear, however, can feel easier on rest days or for those who prefer not to insert a product. It may also be a useful backup alongside discs, especially on unpredictable flow days.

Which is right for you?

Choosing between a disc and underwear depends on flow, comfort and lifestyle. For women wanting longer wear, fewer changes and better value, a reusable menstrual disc for sale is often the most practical choice.

Those who prefer familiar clothing and do not mind extra washing may lean towards underwear. Some find that a combination of both works best, depending on the day and activity.

Key points for Australians comparing discs and underwear

• Menstrual discs can be worn for up to 12 hours and offer high capacity.
• my mimi discs come in two sizes, with a loop tab for comfort fit and removal.
• At about 83 cents per month, discs are one of the most affordable reusable options.
• Period underwear requires multiple pairs and extra washing, which increases cost.
• my mimi won Best Sustainable Period Care Solution in Australia 2025, building trust among users.
• Both are reusable and reduce waste compared with disposables.

Health Note

This article is for informational purposes only. For personalised advice or diagnosis, always speak to a qualified healthcare professional.