Martin West Designs
Boys' Jammer Swimsuit - Jellyfish
Boys' Jammer Swimsuit - Jellyfish
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Boys' Jammer Racing Swimsuit — Jellyfish
Built for speed. Designed to last. Made in South Africa.
The same jammer the men race in, sized for juniors. Sublimation-printed on colour-fast poly-spandex and built for training and racing, the vibrant Jellyfish print resists fading from chlorine and sunlight, staying bold swim after swim.
The knee-length jammer cut delivers a sleek, streamlined fit, with a lined seat and front for comfort and support, and an inner waist drawcord to keep the fit secure through dives, turns and sprints.
- Sublimation-printed poly-spandex that won't fade
- Lined seat and front for comfort and support
- Inner waist drawcord for a secure fit
- Holds its shape, stretch and colour
- Chlorine and UV resistant
- Jellyfish also comes as a girls' fastback and kneeskin, and in the men's and women's ranges — squad and family sets welcome
Sizing: Choose by your child's waist measurement in cm (below), not by age — children of the same age vary, so please measure. Jammers fit snug for racing; if between sizes, go one size up.
Boys' jammer size chart — body measurements (cm)
| Size | Alias | Waist (cm) | Age guide |
|---|---|---|---|
| 22 | 5XS | 52–56 | ≈ 4–5 yrs |
| 24 | 4XS | 57–61 | ≈ 5–6 yrs |
| 26 | 3XS | 62–66 | ≈ 7–8 yrs |
| 28 | 2XS | 67–71 | ≈ 9–10 yrs |
| 30 | XS | 72–76 | ≈ 11–12 yrs |
The age column is a rough guide only — children of the same age vary, so measure and choose by the waist measurement first. Bigger juniors: the men's version carries on from size 32 S in the same print.
How to measure
- Waist: around the narrowest part of the natural waist, keeping the tape snug but not tight.
Care: Rinse in cold water after every session. Cold-water wash, do not soak, do not bleach, do not iron, cool tumble dry only, and wash dark colours separately.
Complete your Jellyfish family swimwear set
Explore the matching Jellyfish print across these styles. Each item is sold separately; sizes and availability vary by product.
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