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FIND YOUR FIT

Fit & Size Guide

FIND YOUR FIT

Fit & Size Guide

MEASURE WITH CONFIDENCE

How to Measure Yourself

Getting accurate measurements is the best place to start when choosing your size. For the most accurate results, wear fitted clothing or measure over your underwear or swimwear, and stand naturally without holding your breath or pulling the measuring tape too tight.

Keep the tape snug against your body, but not tight enough to compress your skin, and make sure it stays level with the floor where applicable.

Need a flexible measuring tape? Shop one here

Bust
Measure around the fullest part of your bust. Keep the measuring tape level across your back and comfortably snug without pulling it tight.

Underbust
Measure directly beneath your bust, keeping the tape level around your ribcage. This measurement can be especially helpful when choosing swim tops.

Natural Waist
Measure around the narrowest part of your torso, usually above your belly button and below your ribcage. Try bending slightly to one side—the crease that forms is your natural waist.

Hips
Stand with your feet together and measure around the fullest part of your hips and seat. Make sure the tape stays level all the way around.

NO MEASURING TAPE?

No Problem

You can still take your measurements using a piece of non-stretchy string, ribbon, or even a charging cable.

Wrap it around your body just as you would a measuring tape and mark or hold the point where the ends meet. Then lay it flat and measure the length using a ruler or standard construction tape measure.

Avoid using anything stretchy, since it can give you a smaller and less accurate measurement.

Finding Your Best Fit

Oceza pieces come in a variety of cuts, fabrics, and fits, so there isn’t one universal size chart that works for every style. Some pieces are designed to fit close to the body, while others offer more flexibility or a more relaxed fit.For the most accurate sizing, always use the size chart on the individual product page you’re shopping. Unless otherwise stated, our size charts are based on body measurements, so compare your measurements directly with the chart for that specific style.Your best size can also depend on how you prefer your swimwear to fit. Check the individual product’s fit notes for additional guidance, and if you’re still unsure, reach out—we’re always happy to help you find the best fit.
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Women's Cuts
Swimsuits
Triangle Bikini Top Plus

This size guide shows body measurements. We suggest ordering a size up when your measurements are between sizes, but if you prefer minimal coverage fit, consider sizing down.

For accurate measurements, always keep the tape measure parallel to the ground when taking horizontal measurements.

  • Chest – Wrap the tape measure around the fullest part of your chest, passing under your armpits and over your shoulder blades, ensuring a snug but comfortable fit.

Size guide

  CHEST (inches)
2XS 31 ½
XS 33 ⅛
S 34 ⅝
M 36 ¼
L 39 ⅜
XL 42 ½
2XL 45 ¾
3XL 48 ¾
4XL 52.0
5XL 55 ⅛ay
6XL 58 ¼
  CHEST (cm)
2XS 80
XS 84
S 87.9
M 92
L 100
XL 108
2XL 116
3XL 124
4XL 132
5XL 140
6XL 148
Tie-Side Bikini Bottom Plus

This size guide shows body measurements. We suggest ordering a size up when your measurements are between sizes, but for a cheekier fit, consider sizing down.

For accurate measurements, always keep the tape measure parallel to the ground when taking horizontal measurements.

  • Chest – Wrap the tape measure around the fullest part of your chest, passing under your armpits and over your shoulder blades, ensuring a snug but comfortable fit.
  • Hips – Start at one hip, then bring the tape across the fullest part of your hips and buttocks, making sure it stays parallel to the ground.

Size guide

  CHEST (inches) HIPS (inches)
2XS 31 ½ 33 ⅞
XS 33 ⅛ 35 ⅜
S 34 ⅝ 37
M 36 ¼ 38 ⅝
L 39 ⅜ 41 ¾
XL 42 ½ 44 ⅞
2XL 45 ⅝ 48
3XL 48 ⅞ 51 ⅛
4XL 52 54 ⅜
5XL 55 ⅛ 57 ½
6XL 58 ¼ 60 ⅝
  CHEST (cm) HIPS (cm)
2XS 80 86
XS 84 90
S 88 94
M 92 98
L 100 106
XL 108 114
2XL 116 122
3XL 124 130
4XL 132 138
5XL 140 146
6XL 148 154
Scoop Neck Bikini Top Plus

This size guide shows body measurements. We suggest ordering a size up when your measurements are between sizes.

For accurate measurements, always keep the tape measure parallel to the ground when taking horizontal measurements.

  • Chest – Wrap the tape measure around the fullest part of your chest, passing under your armpits and over your shoulder blades, making sure it’s snug but not too tight.
  • Underbust – Measure around your body just below your bust, where a bra band would sit, ensuring the tape is level and comfortably fitted.

Size guide

  CHEST (inches) UNDERBUST (inches)
XS 33 ⅛ 27 ½
S 34 ⅝ 29 ⅛
M 36 ¼ 30 ¾
L 39 ⅜ 33 ½
XL 42 ½ 36 ¼
2XL 45 ⅝ 39
3XL 48 ⅞ 41 ¾

  CHEST (cm) UNDERBUST (cm)
XS 84 70
S 88 74
M 92 78
L 100 85
XL 108 92
2XL 116 95
3XL 124 106
High-Leg Cheeky Bikini Bottom Plus

This size guide shows body measurements. We suggest ordering a size down when your measurements are between sizes.

For accurate measurements, always keep the tape measure parallel to the ground when taking horizontal measurements.

  • Hips – Start at one hip, then bring the tape across the fullest part of your hips and buttocks, ensuring it's level all the way around.

Size guide

  HIPS (inches)
2XS 33 ⅞
XS 35 ⅜
S 37
M 38 ⅝
L 41 ¾
XL 44 ⅞
2XL 48
3XL 51 ⅛
4XL 54 ⅜
5XL 57 ½
6XL 60 ⅝
  HIPS (cm)
2XS 86
XS 90
S 94
M 98
L 106
XL 114
2XL 122
3XL 130
4XL 138
5XL 146
6XL 154
Sports Bikini Top Plus

This size guide shows body measurements. We suggest ordering a size up when your measurements are between sizes.

For accurate measurements, always keep the tape measure parallel to the ground when taking horizontal measurements.

  • Chest – Wrap the tape measure around the fullest part of your chest, passing under your armpits and over your shoulder blades, making sure it’s snug but not too tight.
  • Underbust – Measure around your body just below your bust, where a bra band would sit, ensuring the tape is level and comfortably fitted.

Size guide

  CHEST (inches) UNDERBUST (inches)
XS 33 ⅛ 27 ½
S 34 ⅝ 29 ⅛
M 36 ¼ 30 ¾
L 39 ⅜ 33 ½
XL 42 ½ 36 ¼
2XL 45 ⅝ 39
3XL 48 ⅞ 41 ¾
  CHEST (cm) UNDERBUST (cm)
XS 84 70
S 88 74
M 92 78
L 100 85
XL 108 92
2XL 116 99
3XL 124 106
High-Waisted Bikini Bottom Plus

This size guide shows body measurements. We suggest ordering a size up when your measurements are between sizes.

For accurate measurements, always keep the tape measure parallel to the ground when taking horizontal measurements.

  • Waist – Wrap the tape measure around the narrowest part of your waist, keeping it snug but comfortable.
  • Hips – Start at one hip, then bring the tape across the fullest part of your hips and buttocks, ensuring it's level all the way around.

Size guide

  WAIST (inches) HIPS (inches)
XS 25 ¼ 35 ⅜
S 26 ¾ 37
M 28 ⅜ 38 ⅝
L 31 ½ 41 ¾
XL 34 ⅝ 44 ⅞
2XL 37 ¾ 48
3XL 41 51 ⅛
  WAIST (cm) HIPS (cm)
XS 64 90
S 68 94
M 72 98
L 80 106
XL 88 114
2XL 96 122
3XL 104 130
Low Back One-Piece Swimsuit Plus

Brief and clear answer
Tops
Cropped Rash Guard Plus

This size guide shows body measurements. We suggest ordering a size up when your measurements are between sizes.

For accurate measurements, always keep the tape measure parallel to the ground when taking horizontal measurements.

  • Chest – Wrap the tape measure around the fullest part of your chest, passing under your armpits and over your shoulder blades, ensuring a snug but comfortable fit.
  • Waist – Measure around the narrowest part of your waist, keeping the tape level and not too tight.

Size guide

  CHEST (inches) WAIST (inches) HIPS (inches)
2XS 31 ½ 23 ⅝ 33 ⅞
XS 33 ⅛ 25 ¼ 35 ⅜
S 34 ⅝ 26 ¾ 37
M 36 ¼ 28 ⅜ 38 ⅝
L 39 ⅜ 31 ½ 41 ¾
XL 42 ½ 34 ⅝ 44 ⅞
2XL 45 ⅝ 37 ¾ 48
3XL 48 ⅞ 41 51 ⅛
4XL 52 44 ⅛ 54 ⅜
5XL 55 ⅛ 47 ¼ 57 ½
6XL 58 ¼ 50 ⅜ 60 ⅝
  CHEST (cm) WAIST (cm) HIPS (cm)
2XS 80 60 86
XS 84 64 90
S 88 68 94
M 92 72 98
L 100 80 106
XL 108 88 114
2XL 116 96 122
3XL 124 104 130
4XL 132 112 138
5XL 140 120 146
6XL 148 128 154
Full-Length Rash Guard Plus

This size guide shows body measurements. We suggest ordering a size up, this item runs small.

For accurate measurements, always keep the tape measure parallel to the ground when taking horizontal measurements.

  • Chest – Wrap the tape measure around the fullest part of your chest, passing under your armpits and over your shoulder blades, ensuring a snug but comfortable fit.
  • Waist – Measure around the narrowest part of your waist, keeping the tape level and not too tight.
  • Hips – Start at one hip, then bring the tape across the fullest part of your hips and buttocks, making sure it stays parallel to the ground.

Size guide

  CHEST (inches) WAIST (inches) HIPS (inches)
XS 33 ⅛ 25 ¼ 35 ⅜
S 34 ⅝ 26 ¾ 37
M 36 ¼ 28 ⅜ 38 ⅝
L 39 ⅜ 31 ½ 41 ¾
XL 42 ½ 34 ⅝ 44 ⅞
2XL 45 ⅝ 37 ¾ 48
3XL 48 ⅞ 41 51 ⅛

 

  CHEST (cm) WAIST (cm) HIPS (cm)
XS 84 64 90
S 88 68 94
M 92 72 98
L 100 80 106
XL 108 88 114
2XL 116 96 122
3XL 124 104 130

 
Bottoms
Swim Shorts Plus

This size guide shows body measurements. We suggest ordering a size up when your measurements are between sizes.

For accurate measurements, always keep the tape measure parallel to the ground when taking horizontal measurements.

  • Waist – Wrap the tape measure around the narrowest part of your waist, keeping it snug but comfortable.
  • Hips – Start at one hip, then bring the tape across the fullest part of your hips and buttocks, ensuring it's level all the way around.

Size guide

  WAIST (inches) HIPS (inches)
XS 29 ⅞ 37
S 31 ½ 38 ⅝
M 33 ⅛ 40 ⅛
L 36 ¼ 43 ¼
XL 39 ⅜ 46 ½
2XL 42 ½ 49 ⅝
3XL 45 ⅝ 52 ¾
  WAIST (cm) HIPS (cm)
XS 76 94
S 80 98
M 84 102
L 92 110
XL 100 118
2XL 108 126
3XL 116 134
4" Inch Dive Shorts Plus

This size guide shows body measurements. We suggest ordering a size up when your measurements are between sizes.

For accurate measurements, always keep the tape measure parallel to the ground when taking horizontal measurements.

  • Waist – Wrap the tape measure around the narrowest part of your waist, keeping it snug but comfortable.
  • Hips – Start at one hip, then bring the tape across the fullest part of your hips and buttocks, ensuring it's level all the way around.

Size guide

  WAIST (inches) HIPS (inches)
XS 25 ¼ 35 ⅜
S 26 ¾ 37
M 28 ⅜ 38 ⅝
L 31 ½ 41 ¾
XL 34 ⅝ 44 ⅞
  WAIST (cm) HIPS (cm)
XS 64 90
S 68 94
M 72 98
L 80 106
XL 88 114
8" Inch Dive Shorts Plus

This size guide shows body measurements. We suggest ordering a size up when your measurements are between sizes.

For accurate measurements, always keep the tape measure parallel to the ground when taking horizontal measurements.

  • Waist – Wrap the tape measure around the narrowest part of your waist, keeping it snug but comfortable.
  • Hips – Start at one hip, then bring the tape across the fullest part of your hips and buttocks, ensuring it's level all the way around.

Size guide

  WAIST (inches) HIPS (inches)
XS 25 ¼ 35 ⅜
S 26 ¾ 37
M 28 ⅜ 38 ⅝
L 31 ½ 41 ¾
XL 34 ⅝ 44 ⅞
2XL 37 ¾ 48
3XL 41 51 ⅛
  WAIST (cm) HIPS (cm)
XS 64 90
S 68 94
M 72 98
L 80 106
XL 88 114
2XL 96 122
3XL 104 130
Capri Swim Leggings Plus

This size guide shows body measurements. We suggest ordering a size down when your measurements are between sizes.

For accurate measurements, always keep the tape measure parallel to the ground when taking horizontal measurements.

  • Waist – Wrap the tape measure around the narrowest part of your waist, keeping it snug but comfortable.
  • Hips – Start at one hip, then bring the tape across the fullest part of your hips and buttocks, ensuring it's level all the way around.

Size guide

  WAIST (inches) HIPS (inches)
XS 25 ¼ 35 ⅜
S 26 ¾ 37
M 28 ⅜ 38 ⅝
L 31 ½ 41 ¾
XL 34 ⅝ 44 ⅞
  WAIST (cm) HIPS (cm)
XS 64 90
S 68 94
M 72 98
L 80 106
XL 88 114
Swim Leggings With Pockets Plus

This size guide shows body measurements. We suggest ordering a size down when your measurements are between sizes.

For accurate measurements, always keep the tape measure parallel to the ground when taking horizontal measurements.

  • Waist – Wrap the tape measure around the narrowest part of your waist, keeping it snug but comfortable.
  • Hips – Start at one hip, then bring the tape across the fullest part of your hips and buttocks, ensuring it's level all the way around.

Size guide

  WAIST (inches) HIPS (inches)
2XS 23 ⅝ 33 ⅞
XS 25 ¼ 35 ⅜
S 26 ¾ 37
M 28 ⅜ 38 ⅝
L 31 ½ 41 ¾
XL 34 ⅝ 44 ⅞
2XL 37 ¾ 48
3XL 41 51 ⅛
4XL 44 ⅛ 54 ⅜
5XL 47 ¼ 57 ½
6XL 50 ⅜ 60 ⅝
  WAIST (cm) HIPS (cm)
2XS 60 86
XS 64 90
S 68 94
M 72 98
L 80 106
XL 88 114
2XL 96 122
3XL 104 130
4XL 112 138
5XL 120 146
6XL 128 154
Men's Cuts
Swimsuits
Swim Trunks Plus

This size guide shows body measurements. We suggest ordering a size up when your measurements are between sizes.

For accurate measurements, always keep the tape measure parallel to the ground when taking horizontal measurements.

  • Waist – Wrap the tape measure around the narrowest part of your waist, keeping it snug but comfortable.
  • Hips – Start at one hip, then bring the tape across the fullest part of your hips and buttocks, ensuring it's level all the way around.

Size guide

  WAIST (inches) HIPS (inches)
2XS 28 ⅜ 35 ⅜
XS 29 ⅞ 37
S 31 ½ 38 ⅝
M 33 ⅛ 40 ⅛
L 36 ¼ 43 ¼
XL 39 ⅜ 46 ½
2XL 42 ½ 49 ⅝
3XL 45 ⅝ 52 ¾
4XL 48 ⅞ 55 ⅞
5XL 52 59
6XL 55 ⅛ 62 ¼
  WAIST (cm) HIPS (cm)
2XS 72 90
XS 76 94
S 80 98
M 84 102
L 92 110
XL 100 118
2XL 108 126
3XL 116 134
4XL 124 142
5XL 132 150
6XL 140 158
Tops
Short Sleeve Swim Shirt Plus

This size guide shows body measurements. We suggest ordering a size up when your measurements are between sizes.

For accurate measurements, always keep the tape measure parallel to the ground when taking horizontal measurements.

  • Chest – Wrap the tape measure around the fullest part of your chest, passing under your armpits and over your shoulder blades, ensuring a snug but comfortable fit.
  • Waist – Measure around the narrowest part of your waist, keeping the tape level and not too tight.
  • Hips – Start at one hip, then bring the tape across the fullest part of your hips and buttocks, making sure it stays parallel to the ground.

Size guide

  CHEST (inches) WAIST (inches) HIPS (inches)
2XS 34 ⅝ 28 ⅜ 35 ⅜
XS 36 ¼ 29 ⅞ 37
S 37 ¾ 31 ½ 38 ⅝
M 39 ⅜ 33 ⅛ 40 ⅛
L 42 ½ 36 ¼ 43 ¼
XL 45 ⅝ 39 ⅜ 46 ½
2XL 48 ⅞ 42 ½ 49 ⅝
3XL 52 45 ⅝ 52 ¾
4XL 55 ⅛ 48 ⅞ 55 ⅞
5XL 58 ¼ 52 59
6XL 61 ⅜ 55 ⅛ 62 ¼
  CHEST (cm) WAIST (cm) HIPS (cm)
2XS 88 72 90
XS 92 76 94
S 96 80 98
M 100 84 102
L 108 92 110
XL 116 100 118
2XL 124 108 126
3XL 132 116 134
4XL 140 124 142
5XL 148 132 150
6XL 156 140 158
Full-Length Rash Guard Plus

This size guide shows body measurements. We suggest ordering a size up when your measurements are between sizes.

For accurate measurements, always keep the tape measure parallel to the ground when taking horizontal measurements.

  • Chest – Wrap the tape measure around the fullest part of your chest, passing under your armpits and over your shoulder blades, ensuring a snug but comfortable fit.
  • Waist – Measure around the narrowest part of your waist, keeping the tape level and not too tight.
  • Hips – Start at one hip, then bring the tape across the fullest part of your hips and buttocks, making sure it stays parallel to the ground.

Size guide

  CHEST (inches) WAIST (inches) HIPS (inches)
XS 36 ¼ 29 ⅞ 37
S 37 ¾ 31 ½ 38 ⅝
M 39 ⅜ 33 ⅛ 40 ⅛
L 42 ½ 36 ¼ 43 ¼
XL 45 ⅝ 39 ⅜ 46 ½
2XL 48 ⅞ 42 ½ 49 ⅝
3XL 52 45 ⅝ 52 ¾
  CHEST (cm) WAIST (cm) HIPS (cm)
XS 92 76 94
S 96 80 98
M 100 84 102
L 108 92 110
XL 116 100 118
2XL 124 108 126
3XL 132 116 134
Bottoms
Swim Leggings Plus

This size guide shows body measurements. We suggest ordering a size down when your measurements are between sizes.

For accurate measurements, always keep the tape measure parallel to the ground when taking horizontal measurements.

  • Waist – Wrap the tape measure around the narrowest part of your waist, keeping it snug but comfortable.
  • Hips – Start at one hip, then bring the tape across the fullest part of your hips and buttocks, ensuring it's level all the way around.

Size guide

  WAIST (inches) HIPS (inches)
XS 29 ⅞ 37
S 31 ½ 38 ⅝
M 33 ⅛ 40 ⅛
L 36 ¼ 43 ¼
XL 39 ⅜ 46 ½
2XL 42 ½ 49 ⅝
3XL 45 ⅝ 52 ¾
  WAIST (cm) HIPS (cm)
XS 76 94
S 80 98
M 84 102
L 92 110
XL 100 118
2XL 108 126
3XL 116 134