At Mimi & Co, we’re all about comfort that actually works — and that starts with a great fit. Whether you’re a long-time reusable fan or totally new to period undies, we’ve got your booty covered (literally). 

Let’s break down everything you need to know to find your perfect size in our FreedomFlow™ Period Underwear, including what’s available now and what’s coming soon. 

Spoiler: inclusive sizing is here (and growing!).

📏 What size should I get?

Here’s a handy table with our updated sizing. This is based on AU sizes and waist measurements, to make it easy. 

💬 Fit Tips

• Between sizes? Size up for comfort (especially on bloated days)
• Like things snug and secure? Stick with your standard AU size.
• Want heavy protection? Go for the Heavy absorbency styles... extra layer, same comfy fit.

🎉 Extended Sizes Are Almost Here!

We’re so excited to be expanding our size range:

• 2XL & 3XL are arriving September 2025

• 4XL is dropping October 2025
  
  

Because everybody and “every body” deserves to feel confident, comfy, and leak-free.

🩲 What's the difference between Regular and Heavy?

• Regular: 2 absorbent layers, gusset-only coverage - perfect for everyday flow or as backup with a cup.

• Heavy: 3 absorbent layers, back-to-front coverage - ideal for overnight, postpartum, or heavier days.

👉 Pro tip: 

Pair with a Luxe Wet Bag to carry spares or backups discreetly on the go.

🧼 How do I wash them?

Easy! You can wash your undies the same way as our period pads. Just follow this guide - it’s simple, gentle, and keeps your undies looking and working like new.

💌 Need help choosing?

Still unsure? We’re just a DM or email away. Our team’s here to help you find your match - zero guesswork, zero leaks, zero stress.

🌱 Ready to ditch the nasties? 

Discover what’s really in disposable period products - and why making the switch matters for your body and the planet.

 

Let us know if you have any questions - we love a good period undies chat!