Koa Bikini Bottom

$70.00

Color:Mandarin

Size:

Size Chart

Size Charts

JOLYN Australia — find your perfect fit

Women's One Piece Swimsuits

Torso measurement is the most important for finding your accurate one piece size.
If you are between torso measurements or your torso runs long, we recommend sizing up!

Size	AU Dress Size	Torso (cm)	Cup Size	Waist (cm)	Hip (cm)	Bust (cm)
Youth
18	5–6 Years	102–109	—	48–53	56–64	56–58
20	7–8 Years	112–119	—	56–61	66–74	61–66
22 / 22J	9–10 Years	122–130	—	58–61	76–81	69–71
24J	11–12 Years	135	—	61–64	84–86	74–76
Adult
24	4	142	AA	58–61	84–86	74–76
26	4 \| 6	145	A	64–66	89–91	79–81
28	6 \| 8	149	B	69–71	94–97	84–86
30	8 \| 10	152	C	74–76	99–102	89–91
32	10 \| 12	156	C	79–81	104–107	94–97
34	12 \| 14	160	C \| D	84–86	109–112	99–102

Fabric Fit Tip

Foreverever

Consider sizing up

Classic chlorine-resistant fabric. Least stretch, most structured — size up if you're between sizes.

Sea-Flex

True to size

Performance fabric with the feel of lifestyle swimwear. A bit more stretch than Foreverever.

Need help finding your size?

Reach out and we'll sort you out!

Women's Bikini Tops

To find your bust measurement — measure around the fullest part of your chest.

Size	Bust (cm)	Under Bust (cm)	Cup Size	Waist (cm)
XXS	69–74	66–69	AA	59–61
XS	79–81	71–74	A	64–66
S	84–86	76–79	A	69–71
M	89–92	81–84	B	74–76
L	94–97	86–89	C	79–81
XL	99–102	92–94	C/D	84–86
2XL / D	97–99	89–92	D/DD	89–92
4XL / DD	97–99	89–92	DDD	94–97

Need help finding your size?

Reach out and we'll sort you out!

Women's Bikini Bottoms

Measure your waist at the smallest point and hips at the fullest part.

Size	Waist (cm)	Hip (cm)
XXS	59–61	76–82
XS	64–66	89–92
S	69–71	94–97
M	74–76	99–102
L	79–81	104–107
XL	84–86	109–112

Need help finding your size?

Reach out and we'll sort you out!

Men's Swimwear

Measure your waist and hips for the best fit.

Men's Brief

Size	Waist (cm)	Hip (cm)
22	51–56	59–61
24	59–64	64–69
26	64–71	69–79
28	71–76	81–84
30	76–81	86–89
32	81–86	92–94
34	86–92	97–99
36	92–97	102–104
38	97–102	106–109

Men's Jammer

Size	Waist (cm)	Hip (cm)	Thigh (cm)	Inseam (cm)
22	51–56	59–61	33–36	15
24	59–64	64–69	38–43	16
26	64–71	69–79	41–43	18
28	71–76	81–84	46–48	20
30	76–81	86–89	51–54	22
32	81–86	92–94	56–59	23
34	86–92	97–99	61–64	24
36	92–97	102–104	66–69	24
38	97–102	106–109	71–74	24

Need help finding your size?

Reach out and we'll sort you out!

How to Measure

Women

TorsoMost important for one piece sizing. Measure from the top of your shoulder, over the fullest part of your bust, through your legs and back up to the starting point.
BustMeasure around the fullest part of your chest.
WaistMeasure around the smallest part of your waist.
HipsKeep the tape parallel to the floor and measure around the fullest part of your hips.

Men

WaistMeasure around the smallest part of your waist.
HipsKeep the tape parallel to the floor and measure around the fullest part of your hips.
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Still not sure about your size?

We're happy to help — reach out any time!

Variant

Description

Our Koa bikini bottoms are your favorite Andy bottoms but designed with buttery soft Recycled Sea-Flex fabric. Giving you a little more stretch and comfort, the Koa bottoms provide seamless finishes around the leg holes while still providing that snug fit for any activity. Whether you’re surfing, paddling, open water swimming, or just hanging out on the sand, the Koa can stand up to the activity. For those who like fuller bum coverage, the Koa is perfect for anyone looking for a more conservative beach bottom!

JOLYN Surf collection
Good for: Surfing, paddling, ocean activities, lifestyle
Drawstring
Medium-full coverage
Coverage 4
Tagless
Lined for maximum privacy
Runs true to size

Fabric Composition:

Recycled Sea-Flex
Made out of recycled fishing nets and other discarded nylon
Shell: 78% Recycled Nylon 22% Elastane
Liner: 78% Recycled Nylon 22% Elastane

Care Instructions:

Hand wash cold
Hang dry
Do not iron, dry clean or bleach

How To Measure Yourself

Shipping & Return

SHIPPING

When will my order ship?

Your suits will (usually) ship out within 2 business days of the order date. Orders placed on Friday or during the weekend will ship out the following Monday. This includes all shipping types (even expedited).

My order was marked as delivered but I never got it. What do I do?

JOLYN is not responsible for replacing packages sent to incorrect or outdated addresses, as entered by the customer, so please be sure to double check your shipping address before placing your order! If you realize you've made a mistake with your order, please email us within 20 minutes of the order being placed and we will try to get the address changed. Sadly, we cannot make any promises.

RETURNS & EXCHANGES

What's your return policy?

You can return items for a refund within 30 days of purchase.

The item/suit must be unworn, unused, unwashed, free of stains and odors and still have the tags and the hygienic liner attached. Please do not send suits back if they do not comply with the above requirements, as we are unable to issue store credit/refund and are not responsible for sending the item back to you.

Please check our full return policy Here.

How long does it take for me to get a refund?

Please allow 2 weeks for your return to be processed. You will receive a refund confirmation through email once your refund has been issued.

Koa Bikini Bottom

$70.00

Size	AU Dress Size	Torso (cm)	Cup Size	Waist (cm)	Hip (cm)	Bust (cm)
Youth
18	5–6 Years	102–109	—	48–53	56–64	56–58
20	7–8 Years	112–119	—	56–61	66–74	61–66
22 / 22J	9–10 Years	122–130	—	58–61	76–81	69–71
24J	11–12 Years	135	—	61–64	84–86	74–76
Adult
24	4	142	AA	58–61	84–86	74–76
26	4 \| 6	145	A	64–66	89–91	79–81
28	6 \| 8	149	B	69–71	94–97	84–86
30	8 \| 10	152	C	74–76	99–102	89–91
32	10 \| 12	156	C	79–81	104–107	94–97
34	12 \| 14	160	C \| D	84–86	109–112	99–102

Features

Recycled Sea-Flex Fabric

Made out of discarded fishing nets
Drawstring

So you can be sure your suit won't budge
Medium-Full Coverage

Rounds across the butt with a regular to high cut at the leg opening
Recycled

Proudly made out of recycled materials

Foreverever Fabric

Our cult favorite original performance fabric beloved by top tier athletes. Built for durable, reliable performance.

Best For: Training, high intensity activity
Chlorine Resistance: Chlorine proof
Stretch Level
Fit: Fits snug to reduce drag, recommend sizing up
Handfeel: Soft, sturdy, durable

Foreverever Fabric

Our cult favorite performance fabric now made out of recycled plastic water bottles. Built for durable, reliable performance.

Best For: Training, high intensity activity
Chlorine Resistance: Chlorine proof
Stretch Level
Fit: Fits snug to reduce drag, recommend sizing up
Handfeel: Soft, sturdy, durable

Recycled Foreverever Fabric

Our cult favorite performance fabric now made out of recycled plastic water bottles. Built for durable, reliable performance.

Best For: Training, high intensity activity
Chlorine Resistance: Chlorine proof
Stretch Level
Fit: Fits snug to reduce drag, recommend sizing up
Handfeel: Soft, sturdy, durable

Recycled Sea-Flex Fabric

Made of recycled fishing nets and other discarded nylon, Recycled Sea-Flex is a chlorine resistant performance fabric that blends comfort and athletic support.

Best For: Surfing, ocean activity
Chlorine Resistance: 150 hours
Stretch Level: Medium stretch
Fit: Runs larger than Foreverever suits, fits true to size
Handfeel: Soft, stretchy, comfortable

Recycled Sea-Flex Fabric

Made of recycled fishing nets and other discarded nylon, Recycled Sea-Flex is a chlorine resistant performance fabric that blends comfort and athletic support.

Best For: Tennis, Pickleball, Golf
Chlorine Resistance: 150 hours
Stretch Level
Fit: Fits true to size
Handfeel: Soft, stretchy, comfortable

Spacer Fabric

Our thickest fabric, Spacer feels almost like a lightweight neoprene wetsuit - making it great for compression and durability.

Best For: Surfing, high intensity ocean activity
Chlorine Resistance: 150 hours
Stretch Level: Minimal stretch
Fit: Runs true to size
Handfeel: Thicker than our other fabrics, like a light neoprene

SurfTec Fabric

Our go-to fabric for Surf—compressive enough to stay put during activity yet soft and stretchy enough for all-day wear with built-in UV protection.

Best For: Surfing, ocean activity
Chlorine Resistance: 150 hours
Stretch Level
Fit: Runs larger than Foreverever suits
Handfeel: Soft, stretchy, comfortable with a light sheen

SplashTec Fabric

Durable, chlorine-proof fabric with added stretch for extra comfort and flexibility, without the fade. The perfect entry to your swimming journey.

Best For: Entry-level swimmers, recreational activity
Chlorine Resistance: Chlorine-proof
Stretch Level
Fit: True to Size
Handfeel: Soft, stretchy, durable

PaceTec Fabric

Meet your new uniform: sleek, soft, stretch fabric engineered specifically for running—from track to trail.

Best For: Running, Track & Field, Cross Country, Weight Room
Stretch Level
Fit: Compressive fit that moves with you
Handfeel: Sleek, soft, cooling hand-feel

Strider Fabric

Perfectly lightweight with micro-texture technology so you can move freely without the cling

Best For: Running, Cross Country, Track & Field
Stretch Level
Fit: Comfortable fit that contours the body
Handfeel: Swift, perfectly lightweight hand-feel with micro-texture technology to resist cling

Koa Bikini Bottom

Size Charts