what size menstrual disc should i get?
Date Created: 16th of June 2025
Read Time: 4 minutes
Choosing the right menstrual disc size can make all the difference in comfort, fit, and confidence. At my mimi, we offer two sizes to suit different bodies, preferences, and flow types.
why size matters
A disc that fits well will stay in place, seal properly, and reduce the risk of leaks. If it’s too small, it may shift or feel unstable. If it’s too large, it may feel uncomfortable or apply pressure to the vaginal walls.
the my mimi sizing guide
We currently offer two sizes:
-
Small – 32ml capacity
This size is ideal if you’re under 30 and haven’t given birth vaginally. It has a smaller diameter and may suit those with a lower cervix or lighter flow. -
Large – 61ml capacity
Best for those over 30, have given birth vaginally, or have a higher cervix or heavier flow. It offers greater capacity and a slightly wider fit.
how to know what size you need
The most accurate way to choose is by learning your cervical position. This tells you how much space there is for the disc and helps determine whether Small or Large is best for you.
still unsure?
You can check out our guide to Menstrual Discs vs Menstrual Cups to understand which is better for your body and lifestyle.
other things to consider
- Flow level – If you have a heavy flow, the Large disc offers more capacity and may help you go longer between changes.
- Birth history – Vaginal birth can change your anatomy, which is why we generally recommend the Large size if this applies.
- Cervical position – A higher cervix typically benefits from the Large size; a lower cervix may suit the Small.
making the switch
Whether it’s your first time using a disc or you're switching from another brand, we’ve created a full article to help you feel confident. Read: How to Insert a Menstrual Disc for Beginners.
need more help?
Visit our Frequently Asked Questions page or reach out via our Contact Page.
Choosing the right size isn’t about getting it perfect the first time — it’s about learning what feels right for you. And we’re here to help every step of the way.
