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A woman models a pair of super soft merino wool bikini brief underwear. Light and breathable, these briefs feature a 1-inch woven sport elastic band, and high cut leg openings for a better range of movement. Front view.
A woman models a pair of super soft merino wool bikini brief underwear. Light and breathable, these briefs feature a 1-inch woven sport elastic band, and high cut leg openings for a better range of movement. Back view.
A woman models a pair of super soft merino wool bikini brief underwear. Light and breathable, these briefs feature a 1-inch woven sport elastic band, and high cut leg openings for a better range of movement.
A pair of super soft merino wool bikini brief underwear. Light and breathable, these briefs feature a 1-inch woven sport elastic band, and high cut leg openings for a better range of movement.
A woman models a pair of super soft merino wool bikini brief underwear. Light and breathable, these briefs feature a 1-inch woven sport elastic band, and high cut leg openings for a better range of movement., side view
A woman models a pair of super soft merino wool bikini brief underwear. Light and breathable, these briefs feature a 1-inch woven sport elastic band, and high cut leg openings for a better range of movement., front view
A woman models a pair of super soft merino wool bikini brief underwear. Light and breathable, these briefs feature a 1-inch woven sport elastic band, and high cut leg openings for a better range of movement., back view
A woman in front of a picnic table models a pair of super soft merino wool bikini brief underwear. Light and breathable, these briefs feature a 1-inch woven sport elastic band, and high cut leg openings for a better range of movement.
A pair of super soft merino wool bikini brief underwear. Light and breathable, these briefs feature a 1-inch woven sport elastic band, and high cut leg openings for a better range of movement.
A woman stands in front of a wooden door wearing a pair of super soft merino wool bikini brief underwear. Light and breathable, these briefs feature a 1-inch woven sport elastic band, and high cut leg openings for a better range of movement.
A woman models a pair of super soft merino wool bikini brief underwear. Light and breathable, these briefs feature a 1-inch woven sport elastic band, and high cut leg openings for a better range of movement.
Front view of a female model wearing black microweight merino wool bikini briefs with a woven elastic waistband and high-cut legs
A woman models a pair of super soft merino wool bikini brief underwear. Light and breathable, these briefs feature a 1-inch woven sport elastic band, and high cut leg openings for a better range of movement. Front view.
A woman models a pair of super soft merino wool bikini brief underwear. Light and breathable, these briefs feature a 1-inch woven sport elastic band, and high cut leg openings for a better range of movement. Back view.
A woman models a pair of super soft merino wool bikini brief underwear. Light and breathable, these briefs feature a 1-inch woven sport elastic band, and high cut leg openings for a better range of movement.
A pair of super soft merino wool bikini brief underwear. Light and breathable, these briefs feature a 1-inch woven sport elastic band, and high cut leg openings for a better range of movement.
A woman models a pair of super soft merino wool bikini brief underwear. Light and breathable, these briefs feature a 1-inch woven sport elastic band, and high cut leg openings for a better range of movement., side view
A woman models a pair of super soft merino wool bikini brief underwear. Light and breathable, these briefs feature a 1-inch woven sport elastic band, and high cut leg openings for a better range of movement., front view
A woman models a pair of super soft merino wool bikini brief underwear. Light and breathable, these briefs feature a 1-inch woven sport elastic band, and high cut leg openings for a better range of movement., back view
A woman in front of a picnic table models a pair of super soft merino wool bikini brief underwear. Light and breathable, these briefs feature a 1-inch woven sport elastic band, and high cut leg openings for a better range of movement.
A pair of super soft merino wool bikini brief underwear. Light and breathable, these briefs feature a 1-inch woven sport elastic band, and high cut leg openings for a better range of movement.
A woman stands in front of a wooden door wearing a pair of super soft merino wool bikini brief underwear. Light and breathable, these briefs feature a 1-inch woven sport elastic band, and high cut leg openings for a better range of movement.
A woman models a pair of super soft merino wool bikini brief underwear. Light and breathable, these briefs feature a 1-inch woven sport elastic band, and high cut leg openings for a better range of movement.
Front view of a female model wearing black microweight merino wool bikini briefs with a woven elastic waistband and high-cut legs

Microweight 145 Women's Wool Bikini Briefs Woolverino

$32.99
/
PAIRS
1 Pack
3 Pack
SILHOUETTE
SILHOUETTE – Bikini

Bikini

SILHOUETTE – Boyshort

Boyshort

SILHOUETTE – Boxer Brief

Boxer Brief

Color
Size
Size chart

Measurements

Please note, measurements refer to body size, not garment dimensions, unless otherwise noted. Measurements are in inches.



Women's Clothing Size Chart


Size USA Size Chest (in) Waist (in) Hip (in) Shirt Length (in) Inseam (in)
XS 2 32-33 24-25 34-35 23.5-24.5 26-29
S 4 to 6 34-35 26-27 36-37 24.5-25.5 28-30
M 8 to 10 36-38 28-30 38-40 25.5-26.5 29-31
L 12 to 14 39-41 31-33 40-42 26.5-27.5 30-32
XL 16 to 18 42-43 33-35 43-44 27.5-28.5 30-32
2X 20 to 22 44-45 35-37 44-45 28.5-29.5 30-32
3X 24 to 26 46-47 37-39 46-47 29.5-30.5 30-32



Women's Petite and Long Bottoms Size Chart


Size USA Size Waist (in) Hip (in) Inseam (in)
SP 4 to 6 26-27 36-37 26-28
ST 4 to 6 26-27 36-37 31-33
MP 8 to 10 28-30 38-40 27-29
MT 8 to 10 28-30 38-40 32-34
LP 12 to 14 31-33 40-42 28-30
LT 12 to 14 31-33 40-42 33-35

 


How to Measure

Chest: Measure the circumference around the fullest part of your chest, underneath the arms.

Waist: Measure the circumference around the natural waist, near the belly button.

Hip: Measure the circumference around the fullest part of your hips.

Shirt Length: This measurement refers to the approximate size of the shirt back length, from the neck to the bottom hem.

Inseam: Measure from the center of the crotch to the end of the ankle.




Fit Types

Athletic Fit

Regular Fit

Relaxed Fit
Athletic Fit Regular Fit Relaxed Fit

Fits best as: Base Layer

Skin tight, slim, compression style fit. Wear this layer first and add on top of it if needed.

Fits best as: Base Layer, Mid Layer

True to size, standard fit with a little bit of room to breathe, but not too baggy. Perfect on its own or with a t-shirt or thin shirt underneath.

Fits best as: Mid Layer, Insulating Layer, Outer Layer

A little more room than you would find in a Regular fit. Enough space to fit 1-2 layers underneath.

Fit FAQs

What if I am between sizes?

If you are between sizes, we recommend sizing up or down based on what fit type you would prefer, and based on how you plan to wear the piece. Our knitted merino is stretchy and you could realistically go with either size. If you would prefer an Athletic fit, size down. If you prefer a Regular or Relaxed fit, size up.

Do I need to size up/down to layer?

Generally, no, you do not need to purchase a different size than normal. Our base layers are designed to fit right into your current layering system. They are also designed to work with other products in our line, too. You may wish to adjust your sizing if you plan to wear one of our garments in a way that it is not intended, if that's the case please feel free to contact our customer service team for help.

Does your clothing run true to size?

Yes, our clothing runs true to size and is sized similar to most other American brands. If a sizing discrepancy is discovered, you will see fit advice in that product's specific listing.

Not sure what size or fit type you need?

Learn more about layering systems and how they can help you choose. Still need help? Contact our customer service team for personalized advice.
  • In stock, ready to ship
  • Backordered, shipping soon
OEKO-TEX Standard 100

This certified product has been tested against a list of over 1,000 harmful substances, including PFAS.

Woolmark Certification

This certified product meets Woolmark standards, ensuring exceptional quality, reliability, and performance.

Our Guarantee

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running up a rock slope wearing a merino sun hoodie and merino wool pullover and wool sweater

MICROWEIGHT MERINO WOOL

  • 145 g/m
  • 84% Merino Wool, 13% Nylon, 4% Spandex 
  • Tested safe against over 1000 harmful chemicals including PFAS
  • Machine Wash & Dry
  • UPF 20

Our microweight Merino wool is our lightest and most breathable fabric. It’s designed for high-output activities in warm to hot conditions. Perfect for hiking, running, biking, and everyday wear when you need sun protection and moisture management without extra bulk. Our Microweight fabric also works great as a base layer in spring and fall. You can learn more about our different Merino fabric weights here.

Temperature (°F)

Temperature Icon
0°-30°
30°-60°
60°-90°

Activity Level

Activity Icon
LOW
MEDIUM
HIGH

Benefits of Merino Wool

Wool is naturally anti-odor
Wool is naturally moisture wicking
wool is naturally chemical free
wool is warm when wet
wool is renewable and sustainable
wool is naturally breathable
wool can protect you from uv radiation
wool is naturally fire resistant
Our Merino Wool Is Machine Wash & Dryable
Merino Wool Is Naturally Temperature regulating
  • 5 stars: 11 (92%)
  • 4 stars: 0 (0%)
  • 3 stars: 1 (8%)
  • 2 stars: 0 (0%)
  • 1 star: 0 (0%)
A
Alison
Black / M
Height: 5’4”
Weight: 125
Primary Activity: Running
Best underwear ever! I will be buying more

Best underwear ever! I will be buying more.

C
Christine (Fairbanks, US)
Black / S
Height: 5'7
Weight: 100
Primary Activity: Casual / Lifestyle
Been using it for months!

They're strong, no tears or holes and I've used em a bunch! Hard water—still soft! Not smelly after enough wears, really keeps warmth, helps to not be humid down there. Not itchy at all. Best underwear. I got a couple, and I'm grateful to God for this purchase. I'm usually really skin-sensitive and these ARE SO COMFY. I prefer them! Never want new pairs ever again unless it's these. Thank youuuuuuu

Christine,

Thank you for taking the time to leave such a positive review of our Microweight Women's Wool Bikini Briefs. We are thrilled to hear that you have been using them for months and are happy with the performance. Our Woolverino material is designed to be strong and durable, even after multiple uses.

We are glad to hear that even with hard water, the briefs remain soft and do not cause any discomfort.

We are also happy to hear that our briefs are not itchy and have been comfortable for your skin. We always strive to provide the best quality products for our customers, and we are glad to hear that our briefs have exceeded your expectations.

Thank you for choosing our Microweight Women's Wool Bikini Briefs and for your continued support. We are grateful to have you as a customer and are always here to assist you with any further needs.

Best,

-The Minus33 Customer Service Team

M
Mary A.R. (Wilkes-Barre, US)
Black / M
Softest underwear

The bikini briefs are absolutely the softest underwear I have ever worn. I am a runner and they were perfect for my runs. No bunching, sliding or moving during my runs. I also wore them during a spin class and also weight lifting. The moisturizer wicking material is breathable . I did wear them to run in a snow storm and also when it was raining . Highly recommend anything from Minus33. Try these underwear you won't be sorry !! 5 plus STARS 🤩

R
Randy S. (Logan, US)
Slate Blue / XL

wife loves them plan is to switch all her underwear out to wool now.

Randy,

Thank you for taking the time to leave us a review. We're so happy to hear that your wife loves our Micro Weight Wool Bikini Briefs. Our goal is to provide comfortable and high-quality products for our customers. We hope to see you again soon!

-Steven D

C
Cupkate N. (Ashland, US)
why is everyone scared of wool?

Why is everyone prejudice against wool? Good quality wool is not itchy. Cashmere is not itchy and it is wool. big bucks are dropped just for clothes to have a hint of that good stuff in them. Well, there are other good wools out there too. Merino wool is another good wool. Cashmere is warmer and softer than merino, but less durable, making cashmere the preferred textile for casual wear, while merino is the preferred wool for active wear. Warmer: Cashmere can be seven to eight times warmer than merino wool. Softer: Cashmere has a higher loft, which makes it softer. But you don't really want cashmere undies. They aren't going to hold their shape.
Merino, breed of fine-wool sheep. Merino fibers are much finer and softer than standard wool and easy to wear all day. It provides good insulation, transports moisture and has anti-static properties. Since it is a fine wool, it doesn't itch, smell or crease much. It is lightweight and keeps its shape. And it does all this in a completely natural and sustainable way.
So with these undies you have incredibly soft, sustainable undies that match your bodies temperature, They don't retain smell and feel great. They are durable and just are awesome! Get you some woolie undies. It is the new in thing!

R
Robin

5 stars. Love. Love. Love.

D
Dee M.
Stretched out

The bikini style stretched out after a couple of hand washings in cold water and laid flat to dry and then it hung loose between my legs. Maybe the boy short style would have been a better choice for me.

Dee!
Thank you for taking the time to reach out! We are sorry to hear that your purchase did not work out for you. Personally, I love the boyshorts and they very well may be a good choice for your next purchase. I do see that the return you requested was processed, please let us know if the credit has not hit your account yet. In the meantime, I am going to get your feedback over to our quality control team. Thank you again for letting us know what happened.
-Minus33

A
Anne B. (Portland, US)
good undies are hard to find

These Bikini briefs are lovely- fashionable and best of all, the fabric is not clingy or wrinkly. Hurrah for lightweight wool! so healthy and so comfortable.

K
Kate D. (Liberty, US)
Best underwear!

I was skeptical, but decided to try a pair (price is a bit steep)...best decision ever. M size fits like it was made for me, and I feel SO comfortable wearing it, not to mention warm...and I love the fact that it does not smell, either...I am probably going to get another pair- just wondering if any other colors will ever be available? Thanks for making such a great product!

J
Joan D. (Farmington, US)
Black / XS
I like 'em. Need to get more.

Soft, light material that helps keep you from overheating down there. The only thing that would make them better is if they had less coverage in the back, kind of like the cheeky style. I'm not a fan of the full coverage in the back, but that's just personal preference. Other than that, these are one of my favorites.

Thank you for sharing your experiences so far! We're glad you're loving them!

M
MaKenzie T. (South Jordan, US)
Small coverage

Love the material, but they are not a full coverage. They ride up extremely bad. So wearing them with my EMS pants I just have a weggy the entire time!

Sorry you were not completely satisfied with your Woolverino Bikini Brief. The boy short may be a better option for you. Thank you for your review.

E
Elliott V.
I Purchased These…

I Purchased These For My Wife And So Far She Loves Them. The Sizing Was True For Her. They Are Soft And Comfortable And Great For Warm Or Cold Temperatures. She Normally Doesn't Like Large Bands On Underwear But Found That For These It Wasn't A Big Issue As It's Very Flexible And Not Overly Thick So Not Really A Negative But A Note For Anyone Looking At These.

D
Daisey

Do these have side seams?

Minus33 Merino Wool Clothing

Ju nell,

Thank you for contacting Minus33. The Minus33 Woolverino Women's Bikini Briefs do not have a side seam.

-Melinda W.

THE MINUS33 DIFFERENCE

merino sheep durable comfortable natural resource organic wear cute animals farm sheering

SUSTAINABLE
& ETHICAL

- Woolmark Quality Standard

- OEKO-TEX Standard 100

- Responsible Wool Standard

- Earth-Conscious Packaging

SAR Kit Search and rescue base layers warm hiking boating mountains accident Minus33

GIVING BACK &

SAVING LIVES

We re-purpose & package gently worn & factory second base layers into SAR Warming Kits distributed FREE to first responders across the USA and Canada.

Two runners in merino tops jogging along a forest trail

SATISFACTION
Guarantee

- 30-Day Returns/Exchanges

- Free Shipping Over $50

- NH-USA Customer Service

- 2-Year Product Warranty*

hard working new hampshire ashland woolen mills history historic sock machine made in NH John Glidden Lawson Glidden Scribner Building

5TH GENERATION
FAMILY-OWNED

We are a 5th-generation family-owned business in New Hampshire with over a century of woolen textile manufacturing expertise. Quality without compromise.

merino sheep durable comfortable natural resource organic wear cute animals farm sheering

SUSTAINABLE
& ETHICAL

- Woolmark Quality Standard

- OEKO-TEX Standard 100

- Responsible Wool Standard

- Earth-Conscious Packaging

SAR Kit Search and rescue base layers warm hiking boating mountains accident Minus33

GIVING BACK &

SAVING LIVES

We re-purpose & package gently worn & factory second base layers into SAR Warming Kits distributed FREE to first responders across the USA and Canada.

Two runners in merino tops jogging along a forest trail

SATISFACTION
Guarantee

- 30-Day Returns/Exchanges

- Free Shipping Over $50

- NH-USA Customer Service

- 2-Year Product Warranty*

hard working new hampshire ashland woolen mills history historic sock machine made in NH John Glidden Lawson Glidden Scribner Building

5TH GENERATION
FAMILY-OWNED

We are a 5th-generation family-owned business in New Hampshire with over a century of woolen textile manufacturing expertise. Quality without compromise.

Women's Microweight Merino Bikini Brief

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