Soft Cotton vs Flex+ Thongs

Soft Cotton or Flex+

Which thong is right for you?

Same extended cotton gusset in both. The difference is the fabric around it.

★★★★★ 4.9 average · Thousands sold in Australia, now shipping worldwide.

Same gusset
Same price
Same Perfect Fit Guarantee
Three women wearing the Muted Underwear Soft Cotton Thong, showing the extended 100% cotton gusset and full rear coverage
Not sure? Start here

The Soft Cotton Thong

  • The everyday pair — breathable cotton, gentle support.
  • Highly rated — the one women reach for daily.
  • The safest first buy if you're new to Muted Underwear.
Want one for the gym too? Add a single Flex+ to try and find your favorite.
Shop Soft Cotton →

Includes 30-day fit guarantee

Side by side

What actually differs.

Soft Cotton Flex+
Best for Everyday wear, under jeans & casual clothes Gym, exercise, under dress pants
Feel Ultra-soft & natural Smooth, weightless & form-fitting
Fabric 94% cotton, 6% elastane 75% polyamide, 25% elastane
Extended cotton gusset ✓ ✓
Stretch ●●●● Flexible stretch ●●●● 360° stretch
Key difference Breathable airflow Moisture-wicking
Colors 4 3
Price — —

Still torn? Start with the Soft Cotton Thong. It's the one most women reach for first.

What they share

The extended gusset

Most thongs cut corners here. Ours runs wider and longer, graded to every size, and it's always 100% cotton against your skin — whichever pair you choose. That's what stops the riding up.

Soft Cotton Thong front view in cream — breathable everyday cotton thong for women

Soft Cotton Thong

4 Colors★★★★★ 4.9

Breathable cotton, gentle support. The everyday pair.

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Shop Soft Cotton →

Includes 30-day fit guarantee

Woman working out in the Flex+ Cotton Thong in nimbus grey — 360 degree stretch, moisture-wicking active thong

Flex+ Cotton Thong

3 Colors★★★★★ 4.9

360° stretch, moisture-wicking. Built to move.

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Shop Flex+ Cotton →

Includes 30-day fit guarantee

Before you choose

Can I wear the Soft Cotton Thong to the gym?
Yes, absolutely! The Flex+ suits sweatier sessions better as it has moisture wicking properties — but for a lighter workout, the Soft Cotton is very comfortable.
Which one is less visible under leggings?
The Flex+ Cotton Thong. Its smooth, form-fitting finish sits flattest under leggings and thin activewear. The Soft Cotton Thong is the better pick under jeans and casual clothes.
Do they fit the same?
Yes — same grading across both. Between sizes? Use your hip measurement to pick the best size.
What if I choose wrong?
Our 30-Day Perfect Fit Guarantee covers one thong from your first order: we exchange it for free in a different size (same style and color). Tell us within 30 days of delivery. Applies to one thong only, on your first order, once per customer. Learn more about our 30-Day Perfect Fit Guarantee here.
How much is shipping?
Fast delivery. Free shipping available.

Start with the Soft Cotton Thong

Highly rated, and the easiest first buy. Add a Flex+ to try or when you want one for the gym.

Shop Soft Cotton →

30-Day Perfect Fit Guarantee · Fast delivery. Free shipping available.

Not sure? Start with the Soft Cotton Thong Shop Now