Get Your Gifts

Order by 12/18 with 2-day for the best chance of receiving your gifts by 12/25.

10% OFF Markdowns

Use code: SAVE10

Free Shipping on Orders $90+

Events Store Locator Team Sales Lifeguard Orders

Sale Gavin Swim Onesie

$19.99
$19.99
Color:
Size:
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
    24
    26
    28
    30
    32
    34
    36
    38
    40
    42
    44
  • 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

Fit Questions?

If you want a second opinion or need help figuring out your size, reach out to us at contact@jolyn.com and we’ll sort you out!

Free shipping on domestic orders $90+!
Sign up for restock notifications

Details

 

FINAL SALE

The Gavin is a tie-back swim onesie with a four-strap cut out detail on the hip. This swim onesie offers medium/full bum coverage and adjustable back straps, as well as sturdy fabric that stretches along the length of the body for easy movin’ during your workout.  

 Features:

  • Good for: Swimming, water polo, lifeguarding, paddling, ocean and pool activities
  • Tie-Back 
  • Medium-full coverage
  • Coverage 4
  • Unpadded
  • Lined for maximum privacy
  • Tagless for maximum comfort
  • Chlorine proof
  • 2-way stretch
  • Reinforced stitching

Fabric Composition:

Care Instructions:

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

 JOLYN does not recommend tie straps to be used in racing or FINA sanctioned events. Fastening systems including ties are not allowed in competition, as per FINA regulations.

Shipping & Returns

  • Free standard shipping on domestic orders $90+.

  • Standard shipping takes about 5 - 7 business days.

  • Read our full return policy here.

  • Holiday Express Shipping: Order by 12/18 for the best chance of receiving your package by 12/25.

  • Canada Shipping: Due to the ongoing Canada Post strike, we are unable to provide an ETA on Canadian deliveries. Please take this into account before placing an order.

  • Extended Returns: Items purchased between Nov 1, 2024 and Dec 25, 2024 can be returned until Jan 31, 2025. Read our full return policy here.

JOLYNSIDER Rewards

Earn points on every purchase to unlock exclusive rewards and get early access to our promotions.

Sign In or Sign Up

Features

  • High impact

    High impact

    Made for the highest level of activity

  • Foreverever Fabric

    Foreverever Fabric

    Our classic bestselling fabric loved by athletes for its durability

  • Medium-Full Coverage

    Medium-Full Coverage

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

  • UPF 50+

    UPF 50+

    Stay protected during long days in sun

Other Products In This Print


We have plenty in stock.
We have plenty in stock.
We have plenty in stock.
We have plenty in stock.
Only 9 left in stock!
Not in stock.