Nancy Swim Onesie

Regular price: $19.99
Sale price: $19.99

Color:

Size Chart

One Piece Swimsuit
Size Guide

Torso measurement is most important for finding your accurate one piece size.

If you are in between torso measurements or know your torso runs long we recommend sizing up!

JOLYN One Piece
Size

22 / 22J

24J

Dress Size
(US)
Y10
Y12
00
0 | 2
2 | 4
4 | 6
6 | 8
8 | 10
10 | 12
12 | 14
14 | 16

Torso
(in)
51
53
56
57
58.5
60
61.5
63
64.5
66
67.5
69
70.5

Cup Size
(in)
AA
A
B
C
C
C | D

Waist
(in)
23-24
24-25
23-24
25-26
27-28
29-30
31-32
33-34
35-36
37-38
39-40
41-42
43-44

Hip
(in)
30-32
33-34
33-34
35-36
37-38
39-40
41-42
43-44
45-46
47-48
49-50
51-52
53-54

Over Bust
(in)
27-28
29-30
29-30
31-32
33-34
35-36
37-38
39-40
41-42
43-44
45-46
47-48
49-50

Measurement Guide

Torso

The most important for finding your accurate one piece size

Measure from the top of your shoulder over the fullest part of your bust, through your legs and around, up your back to the starting point.

If you are in between torse measurements or know your torso runs long, we recommend sizing up!

Bust

Measure around the fullest part at the bust.

Waist

Measure around the smallest part of the waist.

Hips

Keep measuring tape parallel to the floor and measure around the fullest part of the hip.

Measurement Guide

Jolyn swimwear, a woman with measurement arrows and guide

Free shipping on domestic orders $90+!

Details

The Nancy Onesie is built for movement, coverage, and a barely-there feel where it counts. It features wide straps and fuller coverage at the front and back leg openings for a secure, confident fit. The back opening stays open and airy for freedom of movement, while the shape offers higher bum coverage than our other open-back styles—giving you that open-back look you love with just a little more security.

Features:

Good for: Swimming, water polo, lifeguarding, paddling, ocean and pool activities
Fixed-Back
Full Coverage
Coverage 5
Unpadded
Lined for maximum privacy
Tagless for maximum comfort
Chlorine proof
2-way stretch
Reinforced stitching

Fabric Composition:

Foreverever Fabric®
100% Polyester
Elastic contains trace amounts of Latex

Care Instructions:

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

How to Measure Yourself

Shipping & Returns

Free standard shipping on domestic orders $90+.
Standard shipping takes about 5 - 7 business days.
Read our full return policy here.

Features

High impact

Made for the highest level of activity
Foreverever Fabric

Our classic bestselling fabric loved by athletes for its durability
Full Coverage

Highest rise on the waist, the lowest cut at the leg opening and scoops under the butt
UPF 50+

Stay protected during long days in sun

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: Minimal stretch
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: Minimal stretch
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: Minimal stretch
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: Medium stretch
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

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

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