Kids Wetsuits

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Kids Wetsuits – warmth, safety and comfort for water fun!

A kids wetsuit keeps children warm, protected and comfortable while playing in the water. It provides insulation against cold water, wind and sun exposure, allowing longer swimming sessions, splashing, SUP adventures or wave jumping in the sea, lake or pool – without getting cold or cutting the fun short.

How does a kids wetsuit work?

A kids wetsuit fits close to the body and traps a thin layer of water between the neoprene and the skin. This layer warms up from body heat and helps maintain a stable temperature, even in cooler water.

A children’s wetsuit:

protects against cold water, wind and minor abrasions
reduces heat loss
allows full freedom of movement
offers additional UV protection

It’s ideal for kids who love being in the water – even when they don’t want to get out.

Who is a kids wetsuit for?

A wetsuit for children is perfect for:

kids who spend long hours in the water
children who get cold easily
sensitive kids who feel cold even in summer
young explorers swimming in spring or autumn
beginners in swimming, surfing, snorkeling or SUP
playing in the sea, lakes, rivers or pools
school camps and first water adventures

Shorty or full wetsuit – which one to choose?

Short kids wetsuit (shorty)

ideal for summer
suitable for water above 18–20 °C
great for swimming, playing, SUP and beginner surfing
lightweight and very comfortable

Full kids wetsuit (fullsuit)

suitable for spring and autumn
full-body protection against cold water and wind
recommended for children who get cold quickly
typically available in 3/2 mm or 4–5 mm thickness

Wetsuit thickness guide for kids

Children cool down faster than adults, so choosing a slightly warmer option is often a good idea.

1 mm → warm summer water
2 mm → summer use (18–20 °C)
3/2 mm → spring/autumn (12–17 °C)
4–5 mm → cold water and wind (8–13 °C)

How to choose the right size?

O’Neill sizes generally match age (4–14 years)
the wetsuit should fit snugly, without folds
wrinkles under the armpits usually mean it’s too big
if it feels tight and restricts movement, it’s too small
older children may fit into adult XS or S sizes

Always check the size chart for exact measurements. Special sizes can be ordered if needed.

Why quality matters?

A high-quality kids wetsuit is:

more elastic → easier to put on and move in
softer and more skin-friendly
more durable → keeps its shape longer
warmer → reduces water flushing

O’Neill Ultraflex DS is an excellent choice thanks to its exceptional stretch and comfort, allowing kids to move freely during play or sports.

Best wetsuit for swimming

The O’Neill Reactor II is a great option for swimming, as it features seamless underarm panels that reduce chafing and increase comfort during active movement.

Why choose O’Neill for kids?

The world’s first wetsuit brand
70 years of wetsuit innovation
Excellent fit, stretch and design
Wetsuits that kids actually enjoy wearing

Jack O’Neill invented the wetsuit in 1952, and the brand continues to set the standard for quality in water sports worldwide.

FAQ - NAJPOGOSTEJŠA VPRAŠANJA

A child needs a wetsuit when:
• they quickly get cold in the water or splash around for a long time in summer,
• the water is colder than the air (sea in June/September, rivers),
• they frequently dive or jump into waves,
• they attend outdoor school or swimming lessons in outdoor pools,
• they want additional protection from wind, sun, and abrasions.

A wetsuit significantly extends playtime in the water and reduces the risk of hypothermia.

The time depends on:
• thickness of the wetsuit,
• water temperature,
• sensitivity of the child to cold.

General rule:
• 1–2 mm wetsuit → 30–60 minutes in warm water,
• 2–3½ mm wetsuit → 1–2 hours in colder water.

Yes — swimming wetsuit for children is an excellent choice for:
• cold outdoor pools,
• swimming in spring and autumn,
• children who get cold quickly,
• swimming, SUP, or playing on inflatable elements in water parks.

In indoor pools, we recommend it only for children who get cold very quickly, as they can overheat in warm water.

Yes, partially — a children's wetsuit slightly increases buoyancy, but it does not replace swimming aids.

How it helps:
• adds a small lift (due to the wetsuit),
• the child can more easily turn onto their back,
• improves the feeling of safety in the water,
• reduces fatigue because the body "floats" more easily.

Important:
• a wetsuit is not a life jacket,
• it does not replace armbands or swimming belts,
• it is not suitable as the only protection for children who cannot yet swim.

Yes — under the wetsuit wear:
• classic swimsuits,
• bikinis or the bottom part of swimsuits,
• for infants, a swim diaper.

Not recommended:
• cotton shirts,
• sports shirts,
• too thick clothing.

These materials retain water, rub the skin, and interfere with the tight fit of the wetsuit.

Yes — children's neoprene is an excellent choice for most water activities.

For waves (surfing / bodyboarding):
• reduces cooling with every jump into the wave,
• protects the chest, ribs, and skin from abrasions,
• gives more confidence when playing in the waves.

For SUP and kayaking:
• warms the legs and torso, which are most exposed to the wind,
• enables longer SUP sessions even in colder seas or rivers.

For snorkeling:
• the child stays warmer during prolonged swimming,
• neoprene adds slight buoyancy and a feeling of safety,
• protects the skin from jellyfish or sharp stones.

No. A wetsuit that is too big will not keep the child warm and can even increase the risk of hypothermia.

Why:
• oversized suits have wrinkles → cold water enters them,
• the water does not warm up and constantly circulates → the child cools down faster,
• the wetsuit loses its purpose because it does not fit the body,
• loose wetsuit hinders movement during swimming or diving,
• the child has a worse feeling in the water and less stability.

A properly chosen wetsuit must be tight, like a “second skin,” without wrinkles and without empty space around the lower back, shoulders, or thighs.