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SIZE CHART

Training One Pieces

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


Surf One Pieces

  •  
  • XS
  • S
  • M
  • L
  • XL
  • 1X
  • 2X
  • 3X
  • 4X
  • Dress Size
  • 2 | 4
  • 4 | 6
  • 6 | 8
  • 8 | 10
  • 10 | 12
  • 14 | 16
  • 16 | 18
  • 20 | 22
  • 24 | 26
  • Bust (in)
  • 31-32
  • 33-34
  • 35-36
  • 37-38
  • 39-40
  • 42-25
  • 46-48
  • 49-51
  • 52-54
  • Cup (in)
  • A
  • A/B
  • B/C
  • C
  • C/D
  • D/DD
  • D/DD
  • DD/E
  • DD/E
  • Waist (in)
  • 25-26
  • 27-28
  • 29-30
  • 31-33
  • 34-35
  • 37-40
  • 41-43
  • 44-46
  • 47-49
  • Hip (in)
  • 35-36
  • 37-38
  • 39-40
  • 41-42
  • 43-45
  • 47-50
  • 51-53
  • 54-56
  • 57-61
  • Torso (in)
  • 58-59
  • 60-61
  • 62-63
  • 64-65
  • 66-67
  • 69-71
  • 71-74
  • 75-77
  • 78-80

Fabric Fit Tip!

Different fabrics can make a difference in how your suit fits. Check out our fabric guide below to learn more.

Swimsuit Fabrics

  • Foreverever fabric

    Foreverever

    Consider sizing up

    Our classic Foreverever® fabric is loved by athletes for its durability. By design, it has the least stretch and is the most structured of our fabrics, so if you're in between sizes or prefer a more relaxed fit, we recommend sizing up from your usual size in other brands.

  • Sea-Flex performance swimwear fabric icon

    Recycled Sea-Flex

    True to size

    Made of recycled fishing nets and other discarded nylon, Recycled Sea-Flex is a chlorine resistant performance fabric with the perfect blend of lifestyle comfort and athletic support. It has a soft hand feel and more stretch than Foreverever.

  • Spacer, thick swimwear fabric icon

    Spacer

    True to size

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

  • Surftec

    SurfTec

    True to size

    Our softest and stretchiest sea fabric to date, with calculated stretch and recovery to make it comfortable but still hold shape. Made out of 100% recycled materials.

Training Bikini Tops

To find your bust measurement - measure the circumference of fullest part of your chest.

  • Over Bust (in)
  • Under Bust (in)
  • Cup Size
  • Waist (in)
  • XXS
  • 27-29
  • 26-27
  • AA
  • 23-24
  • XS
  • 31-32
  • 28-29
  • A
  • 25-26
  • S
  • 33-34
  • 30-31
  • A
  • 27-28
  • M
  • 35-36
  • 32-33
  • B
  • 29-30
  • L
  • 37-38
  • 34-35
  • C
  • 31-32
  • XL
  • 39-40
  • 36-37
  • C/D
  • 33-34
  • 2XL/D
  • 38-39
  • 35-36
  • D/DD
  • 35-36
  • 4XL/DD
  • 38-39
  • 35-36
  • DDD
  • 37-38


Surf Bikini Tops

  •  
  • XS
  • S
  • M
  • L
  • XL
  • 1X
  • 2X
  • 3X
  • 4X
  • Dress Size
  • 2 | 4
  • 4 | 6
  • 6 | 8
  • 8 | 10
  • 10 | 12
  • 14 | 16
  • 16 | 18
  • 20 | 22
  • 24 | 26
  • Bust (in)
  • 31-32
  • 33-34
  • 35-36
  • 37-38
  • 39-40
  • 42-25
  • 46-48
  • 49-51
  • 52-54
  • Cup (in)
  • A
  • A/B
  • B/C
  • C
  • C/D
  • D/DD
  • D/DD
  • DD/E
  • DD/E
  • Under Bust (in)
  • 27-28
  • 29-30
  • 31-32
  • 33-34
  • 35-37
  • 39-41
  • 42-43
  • 46-48
  • 49-51
  • Waist (in)
  • 25-26
  • 27-28
  • 29-30
  • 31-33
  • 34-35
  • 37-40
  • 41-43
  • 44-46
  • 47-49

Fabric Fit Tip!

Different fabrics can make a difference in how your suit fits. Check out our fabric guide below to learn more.

Swimsuit Fabrics

  • Foreverever fabric

    Foreverever

    Consider sizing up

    Our classic Foreverever® fabric is loved by athletes for its durability. By design, it has the least stretch and is the most structured of our fabrics, so if you're in between sizes or prefer a more relaxed fit, we recommend sizing up from your usual size in other brands.

  • Sea-Flex performance swimwear fabric icon

    Recycled Sea-Flex

    True to size

    Made of recycled fishing nets and other discarded nylon, Recycled Sea-Flex is a chlorine resistant performance fabric with the perfect blend of lifestyle comfort and athletic support. It has a soft hand feel and more stretch than Foreverever.

  • Spacer, thick swimwear fabric icon

    Spacer

    True to size

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

  • Surftec

    SurfTec

    True to size

    Our softest and stretchiest sea fabric to date, with calculated stretch and recovery to make it comfortable but still hold shape. Made out of 100% recycled materials.

Training Bikini Bottoms

  • Waist (in)
  • Hip (in)
  • XXS
  • 23-24
  • 30-32
  • XS
  • 25-26
  • 35-36
  • S
  • 27-28
  • 37-38
  • M
  • 29-30
  • 39-40
  • L
  • 31-32
  • 41-42
  • XL
  • 33-34
  • 43-44


Surf Bikini Bottoms

  •  
  • XS
  • S
  • M
  • L
  • XL
  • 1X
  • 2X
  • 3X
  • 4X
  • Dress Size
  • 2 | 4
  • 4 | 6
  • 6 | 8
  • 8 | 10
  • 10 | 12
  • 14 | 16
  • 16 | 18
  • 20 | 22
  • 24 | 26
  • Waist (in)
  • 25-26
  • 27-28
  • 29-30
  • 31-33
  • 34-35
  • 37-40
  • 41-43
  • 44-46
  • 47-49
  • Hip (in)
  • 35-36
  • 37-38
  • 39-40
  • 41-42
  • 43-45
  • 47-50
  • 51-53
  • 54-56
  • 57-61

A little sizing tip!
For suits in our Foreverever fabric - if you are in between sizes, or really close to another size, we recommend you size up. For example, if you usually wear a small or medium, you will most likely be a medium in Foreverever fabric products.

For Recycled Sea-Flex fabric products, we recommend you stick to your usual size.

Fabric Fit Tip!

Different fabrics can make a difference in how your suit fits. Check out our fabric guide below to learn more.

Swimsuit Fabrics

  • Foreverever fabric

    Foreverever

    Consider sizing up

    Our classic Foreverever® fabric is loved by athletes for its durability. By design, it has the least stretch and is the most structured of our fabrics, so if you're in between sizes or prefer a more relaxed fit, we recommend sizing up from your usual size in other brands.

  • Sea-Flex performance swimwear fabric icon

    Recycled Sea-Flex

    True to size

    Made of recycled fishing nets and other discarded nylon, Recycled Sea-Flex is a chlorine resistant performance fabric with the perfect blend of lifestyle comfort and athletic support. It has a soft hand feel and more stretch than Foreverever.

  • Spacer, thick swimwear fabric icon

    Spacer

    True to size

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

  • Surftec

    SurfTec

    True to size

    Our softest and stretchiest sea fabric to date, with calculated stretch and recovery to make it comfortable but still hold shape. Made out of 100% recycled materials.

Activewear Tops

  • Bust (in)
  • Waist (in)
  • XS
  • 32
  • 25
  • S
  • 34
  • 27
  • M
  • 36
  • 29
  • L
  • 38
  • 31
  • XL
  • 40
  • 33

Activewear Bottoms

  • Waist (in)
  • Hip (in)
  • XS
  • 25
  • 35
  • S
  • 27
  • 37
  • M
  • 29
  • 39
  • L
  • 31
  • 41.5
  • XL
  • 33
  • 43

Sports Bras

  • Bust (in)
  • Underband (in)
  • XS
  • 32
  • 26
  • S
  • 34
  • 28
  • M
  • 36
  • 30
  • L
  • 38
  • 32
  • XL
  • 40
  • 34

Slides

  • Length (in)
  • S
  • 6-7.5
  • M
  • 8-9
  • L
  • 9.5-10.5

Measurement Guide

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.

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!

Measurement Guide

Jolyn swimwear, a woman with measurement arrows and guide, front side
Jolyn swimwear, a woman with measurement arrows and guide, back side