Sea Level – Size Guide

Sea Level – Size Guide

SEA LEVEL

Size Guide

Find the swimsuit that will offer you the best balance of support, comfort, and silhouette enhancement.

How to take your measurements

1

Measure your bust

Place the tape under your arms and around the fullest part of your bust. Keep it straight across your back.

2

Measure your underbust

Place the tape directly under the bust and measure horizontally around the body, without compressing.

3

Measure your waist

Lean slightly to the side to find the natural crease of your waist, then measure horizontally.

4

Measure your hips

Measure the fullest part of your hips and buttocks, often slightly below the hip bones.

Tip: Take your measurements while wearing light undergarments. The tape should remain horizontal and snug against the body without being too tight.

Swimwear and beachwear

Sea Level Size 8 / XS 10 / S 12 / M 14 / L 16 / XL 18 / XXL 20 / 3XL
Bust 82–84 cm 87–89 cm 92–94 cm 97–99 cm 102–104 cm 107–109 cm 112–114 cm
Underbust 67–69 cm 72–74 cm 77–79 cm 82–84 cm 87–89 cm 92–94 cm 97–99 cm
Waist 62–64 cm 67–69 cm 72–74 cm 77–79 cm 82–84 cm 87–89 cm 92–94 cm
Hips 90–92 cm 95–97 cm 100–102 cm 105–107 cm 110–112 cm 115–117 cm 120–122 cm

Swimwear by cup size

Certain Sea Level styles are designed for specific cup sizes or for multiple cup depths.

Sea Level Size 8 / XS 10 / S 12 / M 14 / L 16 / XL 18 / XXL 20 / 3XL
D/DD Cup – Bust 84.5–87 cm 89.5–92 cm 94.5–97 cm 99.5–102 cm 104.5–107 cm 109.5–112 cm 114.5–117 cm
DD/E Cup – Bust 87–89.5 cm 92–94.5 cm 97–99.5 cm 102–104.5 cm 107–109.5 cm 112–114.5 cm 117–119.5 cm
E/F Cup – Bust 89.5–92 cm 94.5–97 cm 99.5–102 cm 104.5–107 cm 109.5–112 cm 114.5–117 cm 119.5–121 cm
Cups offered: Depending on the collection, Sea Level offers styles adapted for A to G cups, including multi-fit A–DD styles as well as D, DD, E, F, and G cup models.

International size conversions

Sea Level Size – Australia 8 10 12 14 16 18 20
International Size XS S M L XL XXL 3XL
Canada / USA 4 6 8 10 12 14 16
Europe 34 36 38 40 42 44 46
France 36 38 40 42 44 46 48
UK 8 10 12 14 16 18 20

Choosing by swimsuit type

One-piece swimsuit

Compare your bust, waist, and hip measurements. Use the measurement corresponding to the largest size.

Bikini top

Choose based on your underbust and bust measurements, then check the cup depth indicated on the product.

Bikini bottom

Base this mainly on your hip measurement. The edge should stay in place without compressing.

Tankini

Choose based on your bust and hips. The lower part should drape naturally without riding up.

Multi-fit cup style

Multi-fit styles are designed to accommodate several cup depths thanks to their stretchy material and adjustable features.

Shapewear swimsuit

The shaping lining should smooth and support the silhouette while allowing you to breathe and move comfortably.

Beachwear

Use your bust and hip measurements primarily, then choose based on the desired level of ease.

UV protection top

Choose based on your bust measurement. For a looser fit, choose the next size up.

Torso length

Short torso

Opt for styles with adjustable straps, halter styles, or two-piece sets to customize the fit.

Long torso

Choose a style with adjustable straps, a halter style, or a tankini. A larger size may also offer more length.

How to recognize a good fit

At the bust

The bust should be fully enclosed, without overflowing or leaving empty space in the cups.

Under the bust

The band should remain stable and horizontal without riding up or compressing.

At the waist

The material should smooth the silhouette without hindering breathing or movement.

At the hips

The fabric should stay in place without cutting into the hips or creating tension folds.

Are you between two sizes?
Cup depth, torso length, and support level can affect the fit. Our team can help you choose the Sea Level style that suits you best.