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What is your child looking for?
Swimsuit
A swimsuit should stay put when arms are raised. A short torso pulls at shoulders and leg openings.
- Check torso length
- Secure straps
- Free arm movement
Swim shorts
Swim shorts are practical for beach and bathing. The waistband needs to hold without digging in, with room for free leg movement.
- Secure waistband
- Free leg movement
- Easy changing
Bikini or two-piece
Check top and bottoms separately. Broad or crossed straps can be more practical during movement than loose ties.
- Check the top
- Check the bottoms
- Steady straps
More torso coverage
Shirts and one-piece suits cover more skin. Choose a length that lets your child stretch freely and change comfortably.
- Sleeves as preferred
- Suitable length
- Try changing
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Top brands in Kids'
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- CMP
- Color Kids
- Finkid
- HAIX
- Helly Hansen
- Liewood
- MC2 Saint Barth
- O'Neill
- Protest
- Reima
- RipCurl
- Salty Crew
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Guide
Kids' Swimwear
Children's swimwear must stay in place through swimming, jumping and play. Choose their current size and consider what they can put on alone; oversized straps and waistbands can slip.
Key points
- Use current body measurements rather than age alone.
- Waistbands and straps should hold without digging into the skin.
- Both pieces of a set need to fit at the same time.
- Choose fastenings your child can manage where possible.
What suits a day by the water?
| Use | Choose | Bear in mind |
|---|---|---|
| Swimming and jumping | ChooseSwimsuit or secure two-piece | Bear in mindHave them raise their arms and squat. Neckline and straps should remain in place. |
| Beach and paddling | ChooseSwim shorts | Bear in mindThe waistband must hold when wet; long loose legs move more fabric through the water. |
| More coverage | ChooseSwim shirt or one-piece suit | Bear in mindLength needs to work while stretching. The cut should not make changing unnecessarily difficult. |
Swimsuit or shorts?
Swimsuit (One piece)
Straps and torso length need to fit together, including when your child raises their arms.
- Advantage: No gap at the tummy
- Drawback: Needs pulling down fully for toilet stops
Swim shorts (With a waistband)
An elastic or adjustable waistband holds the shorts during swimming and play.
- Advantage: Straightforward changing
- Drawback: Loose versions move more fabric through water
What to look for
| Question | In brief | Why |
|---|---|---|
| How much growing room? | In briefSecure fit today | WhyA loose waistband or long straps do not improve when wet. Choose by body measurements and check during movement. |
| Set or separate pieces? | In briefCheck both pieces | WhyA well-fitting top cannot compensate for slipping bottoms. Separately sold pieces allow different sizes. |
| Easy to change? | In briefLet your child try | WhyComplicated ties and hard-to-reach fastenings can be impractical, particularly after swimming. |
Common questions
Should I buy swimwear to grow into?
Only while it still fits securely now. Your child should not need to keep adjusting straps or waistband in the water. Too much growing room can reduce support.
Can children swim in beach shorts?
They may suit occasional swimming. Long or very loose shorts move more fabric through water than close-fitting swimwear. A secure waistband and free leg movement matter most.
How do I check a swimsuit?
Ask your child to raise their arms and squat. Straps and neckline should stay steady without the leg openings riding up strongly. Check top and bottom separately for two-piece sets.
How should children's swimwear be cared for?
Rinse with fresh water after use and dry according to the label. Do not leave wet garments bundled in a bag for long. High heat can damage stretch fabrics.
Last updated: November 2026