Mini Rashie
Made for little adventurers, beach explorers, and sun-soaked days that never seem to end.
This long-sleeve rashie is designed with elevated contrast stitching, a vibrant statement zip, and playful colour-block panelling for enhanced visibility in the water. Crafted with UPF sun protection to help shield delicate skin from harmful UV rays, it offers added reassurance for long days spent outdoors.
Perfect for wave chasing, sandcastle building, and every salty moment in between, keeping kids protected, comfortable, and free to move, play, and explore under the sun.
Size Guide - Kids Apparel

Size Guide
Clothing
Our apparel follows standard Australian sizing. Measure yourself on the body and match to the chart below — if you land between two sizes, size up for a looser, more laid-back fit.
| Size | XXS | XS | S | M | L | XL | XXL |
|---|---|---|---|---|---|---|---|
| AUS / NZ | 4 | 6 | 8 | 10 | 12 | 14 | 16 |
| US / EU | 0/32 | 2/34 | 4/36 | 6/38 | 8/40 | 10/42 | 12/44 |
| Underbust | 65 | 67 | 70 | 75 | 80 | 85 | 90 |
| Bust | 78 | 80 | 83 | 88 | 93 | 98 | 103 |
| Waist | 62 | 64 | 67 | 72 | 77 | 82 | 87 |
| Hip | 89 | 91 | 94 | 99 | 104 | 109 | 114 |
| Underbust | 25.5 | 26.5 | 27.5 | 29.5 | 31.5 | 33.5 | 35.5 |
| Bust | 30.5 | 31.5 | 32.5 | 34.5 | 36.5 | 38.5 | 40.5 |
| Waist | 24.5 | 25 | 26.5 | 28.5 | 30.5 | 32.5 | 34 |
| Hip | 35 | 35.5 | 37 | 39 | 41 | 43 | 45 |
Wetsuits
Wetsuits are sized on height and weight rather than body measurements. Our suits are cut in AU sizes and should feel snug without restricting you — a loose suit flushes water.
| AUS / UK | US | Height (cm)(in) | Weight (kg) |
|---|---|---|---|
| XXS 4 | 0 | 155–16661–65.5 | 45–52 |
| XS 6 | 2 | 160–16963–66.5 | 53–58 |
| S 8 | 4 | 164–17364.5–68 | 59–62 |
| ST 8 | 4T | 167–17666–69.5 | 59–62 |
| M 10 | 6 | 167–17666–69.5 | 63–67 |
| MT 10 | 6T | 169–17866.5–70 | 63–67 |
| L 12 | 8 | 169–17866.5–70 | 68–75 |
| XL 14 | 10 | 172–18167.5–71.5 | 76–82 |
| XXL 16 | 12 | 175–18569–73 | 83–90+ |
T sizes (ST, MT) are cut for taller frames through the torso and legs.
Swimwear
Our swim is designed for a close, secure fit that stays put in the surf. It shares the same body measurements as our apparel.
| Size | XXS | XS | S | M | L | XL | XXL |
|---|---|---|---|---|---|---|---|
| AUS / NZ | 4 | 6 | 8 | 10 | 12 | 14 | 16 |
| US / EU | 0/32 | 2/34 | 4/36 | 6/38 | 8/40 | 10/42 | 12/44 |
| Underbust | 65 | 67 | 70 | 75 | 80 | 85 | 90 |
| Bust | 78 | 80 | 83 | 88 | 93 | 98 | 103 |
| Waist | 62 | 64 | 67 | 72 | 77 | 82 | 87 |
| Hip | 89 | 91 | 94 | 99 | 104 | 109 | 114 |
| Underbust | 25.5 | 26.5 | 27.5 | 29.5 | 31.5 | 33.5 | 35.5 |
| Bust | 30.5 | 31.5 | 32.5 | 34.5 | 36.5 | 38.5 | 40.5 |
| Waist | 24.5 | 25 | 26.5 | 28.5 | 30.5 | 32.5 | 34 |
| Hip | 35 | 35.5 | 37 | 39 | 41 | 43 | 45 |
Kids
Atmosea Kids is sized by age, with body measurements to check against. Measure on the body and match to the chart below.
| Size (ages) | Chest | Waist | Hip | Height |
|---|---|---|---|---|
| 0 | 5019.5 | 4919.5 | 5220.5 | 7429 |
| 1 | 5421.5 | 5321 | 5622 | 8433 |
| 2 | 5622 | 5421.5 | 5823 | 9236 |
| 3 | 5823 | 5521.5 | 6023.5 | 10039.5 |
| 4–6 yrs | 6224.5 | 5722.5 | 6425 | 11043.5 |
| 6–8 yrs | 6726.5 | 5923.5 | 6927 | 12047 |
| 8–10 yrs | 7228.5 | 6124 | 7429 | 13051 |
| 10–12 yrs | 7730.5 | 6325 | 7931 | 14055 |
| 12–14 yrs | 8232.5 | 6525.5 | 8433 | 15059 |
How to measure
To find the perfect Atmosea fit, simply put on your favourite underwear and measure yourself directly on your body. Take care to wear a really splendid-fitting bra.
- Bust
- Measure around the fullest part of your bust while wearing a bra that fits.
- Under bust
- Measure around your ribcage directly beneath your bust.
- Waist
- Measure around the narrowest point of your waist.
- Hips
- Measure around the fullest part of your hips (seat).