Minus33 Merino Wool Clothing Woolverino Women's Micro Weight Bikini Brief
Minus33 Merino Wool Clothing Woolverino Women's Micro Weight Bikini Brief
Micro Weight - Women's Wool Bikini Briefs Woolverino - Minus33 Merino Wool Clothing
Minus33 Merino Wool Clothing Woolverino Women's Micro Weight Bikini Brief
Minus33 Merino Wool Clothing Woolverino Women's Micro Weight Bikini Brief
Minus33 Merino Wool Clothing Woolverino Women's Micro Weight Bikini Brief
Minus33 Merino Wool Clothing Woolverino Women's Micro Weight Bikini Brief

Micro Weight Women's Wool Bikini Briefs Woolverino

Regular price$32.99
Shipping calculated at checkout.




Boxer Brief
Boxer Brief

Boxer Brief

Size chart


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

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.

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Our Guarantee
woman walking to the lake with paddle board wearing woolverino micro weight ash gray v-neck woman paddle boarding wearing ash gray woolverino micro weight v-neck


Woolverino's Core Spun Technology brings you a merino garment that is durable, athletically fitted, and high-performing. Warm when you need it. Cool when you don't.

Micro Details

Micro weight gives you a feather-light option. Micro is ideal as your base layer, underwear, or on its own when the temps heat up. Merino’s moisture-wicking properties keep you cool when you’re on the move. Core Spun yarn provides extra durability while still offering merino's super soft, insulative, and moisture wicking properties next to the skin. Nylon inner core offers strength, elasticity, resiliency, and durability. Merino Wool outer sheath provides insulation, moisture wicking, and UV protection.

145 g/m2

Jersey Knit

17.5 Micron

84% Merino Wool
UPF Rating 20

Compare Weights


Activities: Hiking, Camping, Lifestyle, Snowsports, Running, Biking.

Seasons: Spring, Summer, Fall, Winter.

High Activity Temperatures: 45°F to 75°F

Low Activity Temperatures: 60°F and up

Learn About Layering

Why Merino Wool?

infographic of woolverino corespun yarn

Core Spun Technology

Core Spun yarn provides extra durability while still offering merino's properties next to the skin. The nylon inner core is wrapped with Merino Wool and a touch of spandex for stretch.

two people sitting next to a river wearing merino wool

Moisture Wicking

Minus33 Merino Wool regulates the amount of moisture on your skin by absorbing any moisture or sweat on your body. Then, the absorbed moisture evaporates out of the fabric into the atmosphere.

merino wool tshirt drying in the sun


Merino Wool fibers naturally reject any bacteria in moisture or sweat as it is wicked away, so foot fungus and smelly odor will not be a problem while wearing our products.

woman hiking with her dog crossing a river

Insulates When Wet

Wool will absorb up to 30% of its weight in moisture without feeling wet or clammy. If you do get wet, wool will insulate you better than cotton or polyester materials.

woman doing yoga on top of a mountain in merino wool base layers

UV Protection

Don’t worry about sunburn on a sunny day summiting a peak. Lightweight layers have a UPF rating of 25. Midweight and Expedition have a UPF rating of 50+.

Australian merino wool sheep


Merino Wool has a low environmental footprint and naturally returns to the elements. Shear a merino sheep in the morning, and in the afternoon they’re happily nibbling their way towards renewing next season’s clip. 



Total Easy Care (TEC) Merino apparel is designed for today's busy lifestyle. Total Easy Care Merino garments are all machine-washable, and are suitable for tumble drying.

Even after frequent laundering they retain an 'as new' appearance. They won't shrink, lose their shape, fade or color-bleed. They remain soft and comfortable for the life of the garment.

Customer Reviews

Based on 8 reviews
MaKenzie Tiegs
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.

Kate D
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!

Joan Durazzo
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!

Elliott Van
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.

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!