Woolly Bikini Briefs Ultralight Underwear

Excellent for any occasion, these ultralight Merino wool bikini briefs by Woolly will keep you comfortable and odor-free all day long.

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Living a life on-the-go? You’ll need a pair of underwear that moves with you. The Woolly Bikini Briefs are a versatile pair of panties for any occasion. The ultralight fabric offers plenty of breathability and reduces panty bunching. It won’t leave any panty lines either!

The supersoft, 17.5-micron Merino wool fibers – along with zero tags and flatlock seams –  are comfortable, even if you have sensitive skin. Compared with other competitors that use 18.5-micron fibers, these bikini briefs are much softer. In other words, it’s only one micron, but it makes a world of difference in the comfort department.

Note: if you’re looking for a bit more protection and coverage, you can try out the Woolly Cheeky Brief or Women’s Yoga Short. It’s a bit thicker material and a different design, but the same high-quality Merino wool.

To sum up, these women’s bikini briefs are, hands down (or should we say pants down), our top choice for female travelers. You’ll be comfortable, protected, and odor-free as you city-hop across the globe!

Woolly Bikini Briefs – Specs & Features:

  • 95% Merino Wool / 5% Elastane
  • 150 GSM ultralight fabric thickness
  • 17.5-micron, soft Merino fabric
  • Zero tags & flatlock seams for added comfort
  • Sizing runs slightly large (check Woolly sizing charts before purchasing)
  • 2 colors available (black & gray)


  • Luxurious next-to-skin feel
  • Ultralight fabric is supportive but allows for movement
  • Versatile bikini brief style fits with most outfits


  • Sizing runs a bit large – consult with Woolly sizing charts before purchasing
  • Higher Merino percentage leads to more questionable durability
  • User-reported fit issues for specific body types

Best For:

Casual | Lifestyle | Travel

Featured In:

Best Merino Wool Underwear For Women

Disclaimer: To maintain authenticity, Merino Wool Gear DOES NOT sponsor products. However, as an Amazon Associates Member, we may earn a commission from qualifying purchases.

Additional information

Merino Percentage

>95% Merino Wool

Fabric Density (gsm)

145 – 180 Ultralight

Fiber Thickness (microns)



Casual, Lifestyle, Travel

Colors Available

Black, Gray


Form-Fitting / Athletic