— Help
Size guide.
A quick walk-through of how Shark sizes work, with the chart and a few measurement tips from the studio.
— Size guide
Find the right fit.
Height is the single best fit signal for swimwear. Use the chart below — or open a Shark PDP to launch the live Find My Size recommender.
| Size | Age | Height (cm) | Chest (cm) | Waist (cm) | Weight (kg) |
|---|---|---|---|---|---|
| 4–5y | 4 – 5 | 102 – 110 | 55 – 58 | 52 – 55 | 16 – 19 |
| 6–7y | 6 – 7 | 116 – 122 | 58 – 62 | 55 – 58 | 20 – 24 |
| 8–9y | 8 – 9 | 128 – 134 | 63 – 67 | 58 – 61 | 25 – 30 |
| 10–11y | 10 – 11 | 140 – 146 | 68 – 72 | 62 – 65 | 31 – 37 |
Body measurements aligned to Speedo Junior, Arena Kids and Decathlon Nabaiji standards.
Height first
Height is the single best fit signal for kids swimwear — it predicts size more accurately than age. Measure barefoot, back against the wall, eyes forward.
Chest
Measure around the fullest part of the chest, arms relaxed at the side. Hold the tape level — snug but not tight.
Between sizes
Size up. ECONYL® has a 4-way stretch and the cut runs compression-snug — a slightly larger band keeps the suit comfortable for the whole season.
Still unsure? Send us the measurement → — we'll write back within the day.