Size Guide
Size Charts
- One Pieces
- Caroline One Pieces
- Bikini Tops
- Bikini Bottoms
- Men's Swim Briefs
- Men's Swim Jammer
- Active Tops
- Active Bottoms
- Sports Bras
- Slides
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
- 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
Caroline 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
- Dress Size
(US) - Y10
- Y12
- 00
- 0
- 2
- 4
- 6
- 8
- 10
- 12
- 14
- 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
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
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.
Men's Swim Briefs
- Waist (in)
- Hip (in)
- 22
- 20-22
- 23-24
- 24
- 23-25
- 25-27
- 26
- 25-28
- 27-31
- 28
- 28-30
- 32-33
- 30
- 30-32
- 34-35
- 32
- 32-34
- 36-37
- 34
- 34-36
- 38-39
- 36
- 36-38
- 40-41
- 38
- 38-40
- 42-43
Hip measurement is the most important for your fit. If you are in between sizes, we recommend you size up!
Men's Swim Jammer
- Waist (in)
- Hip (in)
- Thigh (in)
- Inseam (in)
- 22
- 20-22
- 23-24
- 13-14
- 5.75
- 24
- 23-25
- 25-27
- 15-17
- 6.25
- 26
- 25-28
- 27-31
- 16-17
- 7.25
- 28
- 28-30
- 32-33
- 18-19
- 8
- 30
- 30-32
- 34-35
- 20-21
- 8.625
- 32
- 32-34
- 36-37
- 22-23
- 9
- 34
- 34-36
- 38-39
- 24-25
- 9.375
- 36
- 36-38
- 40-41
- 26-27
- 9.375
- 38
- 38-40
- 42-43
- 28-29
- 9.375
Inseam: Our jammer length hits above the knee.
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
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
How to Measure Yourself
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
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.
-
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
True to size
Our thickest fabric, Spacer feels almost like a lightweight neoprene wetsuit - making it great for compression and durability.
-
SurfTec
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.
