Best Maternity Underwear for Summer 2025: Breathable, Soft & Designed by a Mum for Mums

If you’re expecting during the warmer months, you already know that pregnancy and heat don’t mix well. From swollen ankles to that constant sticky feeling, summer can crank up the discomfort. The last thing you need is tight, scratchy underwear riding up or making you sweat even more.

That’s why choosing the right maternity undies for summer is honestly a game-changer — and I’m not just saying that as someone who makes them. I’m saying that as a mum who’s been there… and learned the hard way.

Let’s chat about what actually matters when picking maternity underwear for an Aussie summer — and why Mummy Undies might be the perfect fit for your bump (and your sanity).

☀️ What to Look for in Maternity Underwear for Summer

When it’s hot outside and your body is growing a human, your undies need to tick a few important boxes:

Breathable fabric – You want airflow, not swampiness. Cotton or bamboo blends are your best friends.
No digging in – Soft waistbands and leg openings that don’t leave marks are a must.
Gentle support – Something that gives your belly a little lift without feeling like shapewear.
Stretch in all the right places – Your body is changing fast. You need undies that move with you, not against you.

💖 Why I Created Mummy Undies

When I was pregnant, I couldn't find underwear that actually fit comfortably and offered any sort of protection, especially during the hotter months. Everything was either too tight, rolled down constantly, or made me overheat.

So I designed Mummy Undies with:
- Soft, breathable fabric that’s perfect for sweaty nights and hot days.
- A bump-loving cut that hugs without squeezing.
- No scratchy seams or tags (because pregnancy is itchy enough already).
- A postpartum-friendly fit, so you’re covered for after baby too.

These aren’t just pretty pairs — they’re designed to make you feel human again when everything else feels like a hot mess.

👙 Less Fuss, More Comfort

You don’t need a drawer full of options. You need 4–5 pairs that you can rely on, wash on repeat, and feel good in. Summer’s already sticky enough — your underwear shouldn’t make it worse.

So if you’re packing your hospital bag, prepping for baby, or just trying to survive a summer pregnancy, give Mummy Undies a try.  
We designed them for days like these. 💛

👉 Shop now and get 10% off your first order with code MUMMY10.  

Comfort is just a pair of undies away.