Lift & Support

SmoothFit Bra

Low Rise & Stretch

SmoothFit Boyleg

Everyday Comfort

SmoothFit Thong

Moderate Coverage

SmoothFit Bikini Brief

Full Coverage

SmoothFit Full Brief

Classic Cut

Bikini Brief

Lounging

Body Short

Shop Mens

Thicker Legs

Boxer Brief

Thinner Legs

Trunk

Easy Access

Boxer Brief Fly

Longer For Activity

Boxer Brief Sport

Full Length

Long Johns

Ages 6 - 14

Junior Trunk

Shop Womens

Lift & Support

SmoothFit
Bra

Low Rise & Stretch

SmoothFit
Boyleg

Everyday Comfort

SmoothFit
Thong

Moderate Coverage

SmoothFit
Bikini Brief

Full Coverage

SmoothFit
Full Brief

Classic Cut

Bikini Brief

Lounging

Body Short

For Him

Shop Mens
Women's Bikini Brief - Libra - Bamboo Underwear - Model:Ashley H
Ashley is 168cm tall, 64cm waist, wearing a size S
Women's Bikini Brief - Libra - Bamboo Underwear - Model:Ashley H
Ashley is 168cm tall, 64cm waist, wearing a size S
Women's Bikini Brief - Libra - Bamboo Underwear - Model:Ashley H
Ashley is 168cm tall, 64cm waist, wearing a size S
Women's Bikini Brief - Libra - Bamboo Underwear - Model:Ashley H
Ashley is 168cm tall, 64cm waist, wearing a size S
Women's Bikini Brief - Libra - Bamboo Underwear - Model:Ashley H
Ashley is 168cm tall, 64cm waist, wearing a size S
Women's Bikini Brief - Libra - Bamboo Underwear - Model:Fabiana
Fabiana is 168cm tall, 83cm waist, wearing a size L
Women's Bikini Brief - Libra - Bamboo Underwear - Model:Fabiana
Fabiana is 168cm tall, 83cm waist, wearing a size L
IN STOCK
X

30 Day First Pair Guarantee

We are so confident that you'll love your Step Ones...

We'll give you a FULL REFUND on your FIRST PAIR

If you don't like them for whatever reason

Bikini Brief
(491)

Price as low as $17.00 with packs!

Colour: Libra

Originals:
Women's Bikini Brief - Tap Shoe - Bamboo Underwear - Model:Yolanda
Women's Bikini Brief - Butter Scotch - Bamboo Underwear - Model:Yolanda
Women's Bikini Brief - Ahoy Sailor - Bamboo Underwear - Model:Yolanda
Limited Edition:
Women's Bikini Brief - Euro Streakers - Bamboo Underwear - Model:Sophie
Women's Starsign Underwear at Step One - Model:Sophie
Women's Bikini Brief - Virgo - Bamboo Underwear - Model:Sophie
Women's Bikini Brief - Libra - Bamboo Underwear - Model:Ashley H
Women's Bikini Brief - Halloween 2024 - Bamboo Underwear - Model:Sophie
Women's Bikini Brief - Scorpio - Bamboo Underwear - Model:Yolanda
Light Green Bamboo Underwear for Women - Model:Alexandra
Dark Grey Women's Bamboo Underwear - Model:Alexandra
Red Women's Bamboo Underwear - Model:Alexandra
Green Women's Underwear - Model:Alexandra
Size:

Women's Bikini Brief Size Guide
Example: If you usually wear a medium, we recommend ordering a large.
Size
AU Size
Waist (CM)
 4XS
 0
40-44cm 
 3XS
 2
45-51cm 
 2XS
 4
 52-59cm
 XS
 6
 60-69cm
 S
8-10 
 70-76cm
 M
12-14
 77-82cm
 L
 16
 83-87cm
 XL
 18
 88-94cm
 2XL
 20
 95-101cm
 3XL
 22
 102-107cm
 4XL
 24
 108-113cm
 5XL
 26
 114-120cm

 

At Step Ones, we are incredibly confident that you'll adore your purchase. However, we understand that personal preferences vary, and if, for any reason, you don't like your first opened and worn pair, we'll be more than happy to provide you with a full refund. Customer satisfaction is our top priority, and we want you to feel completely at ease when shopping with us.
Even if you accidentally picked the wrong size, don't worry – we've got you covered! In addition to our first pair guarantee, we extend returns and exchanges to all unopened products. We want to ensure that you find the perfect fit and are completely satisfied with your Step Ones experience. Your comfort and happiness are essential to us, and we strive to make the entire process seamless and enjoyable. Shop with confidence and know that we're here to assist you every step of the way.

Recommended for you

Matchy For Him

Boxer Brief Libra

$35.00

SmoothFit
Padded Bra Espresso-Tini

$39.00

SmoothFit
Thong Espresso-Tini

$25.00

Shop our Surf Life Saving x Step One pair and donate to a good cause.

Trustpilot

What makes Step Ones special?

Organically Grown Bamboo

This organic material, produced in a close-loop system, wicks away sweat and moisture and allows you to breathe all day long!

Super Comfortable

Our classic bikini brief is cut for comfort. The perfect go to staple for daily wear, our brief features a super soft, moulded waistband. The classic cut provides moderate to full coverage, perfect under all clothing.

Inclusive Size Range

Our underwear is designed for every body. Enhancing individual shape with the perfect fit & cut. We offer sizes 2XS - 5XL, and that's only the beginning!

You may also like

Women's SmoothFit Padded Bra - Espresso-Tini - Bamboo Underwear - Model:HollyWomen's SmoothFit Padded Bra - Espresso-Tini - Bamboo Underwear - Model:Holly
Women's SmoothFit Padded Bra - Espresso-Tini Sale price$39.00
Women's SmoothFit Bikini Brief - Chic Champagne - Bamboo Underwear - Model:ElkeWomen's SmoothFit Bikini Brief - Chic Champagne - Bamboo Underwear - Model:Elke
Women's SmoothFit Bikini Brief - Chic Champagne Sale price$27.00
Women's SmoothFit Thong - Espresso-Tini - Bamboo Underwear - Model:ElkeWomen's SmoothFit Thong - Espresso-Tini - Bamboo Underwear - Model:Elke
Women's SmoothFit Thong - Espresso-Tini Sale price$25.00
Women's SmoothFit Thong - Chic Champagne - Bamboo Underwear - Model:ElkeWomen's SmoothFit Thong - Chic Champagne - Bamboo Underwear - Model:Elke
Women's SmoothFit Thong - Chic Champagne Sale price$25.00
Women's SmoothFit Bikini Brief - Espresso-Tini - Bamboo Underwear - Model:ElkeWomen's SmoothFit Bikini Brief - Espresso-Tini - Bamboo Underwear - Model:Elke
Women's SmoothFit Bikini Brief - Espresso-Tini Sale price$27.00
Women's SmoothFit Bikini Brief - Piña Colada - Bamboo Underwear - Model:ElkeWomen's SmoothFit Bikini Brief - Piña Colada - Bamboo Underwear - Model:Elke
Women's SmoothFit Bikini Brief - Piña Colada Sale price$27.00
Women's SmoothFit Thong - Piña Colada - Bamboo Underwear - Model:ElkeWomen's SmoothFit Thong - Piña Colada - Bamboo Underwear - Model:Elke
Women's SmoothFit Thong - Piña Colada Sale price$25.00
Espresso-Tini - Bamboo- Model:ElkeEspresso-Tini - Bamboo- Model:Elke
Women's SmoothFit Full Brief - Espresso-Tini Sale price$29.00
Women's SmoothFit Full Brief - Piña Colada - Bamboo Underwear - Model:ElkeWomen's SmoothFit Full Brief - Piña Colada - Bamboo Underwear - Model:Elke
Women's SmoothFit Full Brief - Piña Colada Sale price$29.00
Women's SmoothFit Full Brief - Rosé All Day - Bamboo Underwear - Model:ElkeWomen's SmoothFit Full Brief - Rosé All Day - Bamboo Underwear - Model:Elke
Women's SmoothFit Full Brief - Rosé All Day Sale price$29.00

First Pair Guarantee

We are so confident you'll love your Step Ones, we'll give you a full refund on your first opened and worn pair if you don't like them for any reason.

Free shipping on all orders!

Free shipping on all orders in Australia... how good!

Easy Returns

Picked the wrong size by mistake? No problem. On top of our first pair guarantee we also offer returns/exchanges on all unopened products.

Customer Service

Buy with confidence, our dedicated customer service team is available 24/7 to answer any questions you have!