Trusted by professional triathletes
ONELong-Sleeve Wetsuit
For KidsUnisex
R 3,950.00R 5,550.00
Save R 1,600
Pre-order — ships in 7–10 working days
Material Neoprene
Colour Hydro Blue
Size: S
Front view of the ONE Kids Triathlon Wetsuit, designed for young athletes, showing flexible neoprene and colorful leg detailing

Open water can feel like a big leap for any young swimmer. The RSS ONE Kids wetsuit is built to make that step feel easier — and to give them the confidence to keep going.

Designed around how kids actually move in the water: a comfortable T-shirt neckline, easy on-and-off cuffs, and balanced thickness that keeps their body in a natural swim position. Built from the same quality materials as our adult wetsuits, just sized for the next generation.

Buoyancy: 3mm thickness through the core and upper legs keeps your young swimmer in a natural, efficient body position in the water.

Flexibility: Stretch panels at the shoulders and arms allow a full, unrestricted swimming stroke.

Warmth: Yamamoto #38 neoprene construction keeps kids comfortable in colder open water.

Fit: Junior-specific cut designed for triathlon and open water performance — snug without restriction.

Designed for: Young swimmers, junior triathletes, training, and race day.

Hover a zone or row to see what each thickness does for you.

Find your child's size using their height and weight. A snug fit performs best — a wetsuit that's too loose will let water in and slow them down.

Size Height Weight Chest
S125-140 cm27-40 kg71 cm
M132-145 cm37-50 kg76 cm
L142-165 cm47-61 kg81 cm
How to measure: Measure your child's chest at the widest point and check their height standing flat-footed. Between sizes? Choose by weight first — a wetsuit that's too loose won't perform properly.
Still not sure of your size?
Take the size quiz Chat with us

Rinse in fresh water after every use. Hang dry inside-out, away from direct sunlight. Never machine wash, tumble dry, or store wet.

Use a wetsuit-specific shampoo or conditioner once a month to keep the neoprene supple. Avoid contact with petroleum-based products like sunscreen or insect repellent before swimming.

Stored properly, your wetsuit will last seasons.

Free shipping on orders over R 1,500 within South Africa. Standard delivery 2-5 business days.

30-day return window for unworn items in original packaging. See our full returns policy for details.

Free shipping on orders over R 1,500
30-day easy returns
Need help? Chat with our team