Our Underwear
Soft Cotton or Flex+
which thong is right for you?
Same extended cotton gusset in both. The difference is the fabric around it.
★★★★★ 4.8 average · Thousands sold in Australia, now shipping worldwide.
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.
30-day fit guarantee — wrong size, we replace it free.
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 |
| Invisible under leggings | ●●●● | ●●●● |
| 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
Breathable cotton, gentle support. The everyday pair.
30-day fit guarantee — wrong size, we replace it free.
flex+ cotton thong
360° stretch, moisture-wicking. Built to move.
30-day fit guarantee — wrong size, we replace it free.
before you choose
Can I wear the Soft Cotton Thong to the gym?
Which one is less visible under leggings?
Do they fit the same?
What if I choose wrong?
How much is shipping?
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 fit guarantee · Fast delivery. Free shipping available.