Kids' Colour-Changing Swim Shorts

$38.99

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Shipping calculated at checkout.

The Original, sized for kids. The sun shifts the colour and a cannonball switches it back.

Quick-dry fabric
Full elastic waist and drawcord
Matches dad's Original

Colour Purple to Blue Orange to Yellow

Size S (3–4 yrs) M (5–6 yrs) L (7–8 yrs) XL (9–10 yrs) 2XL (11–12 yrs)

Kids' sizes go by age, 3 to 12. Between sizes? Size up so there's room to grow. Size guide

Free shipping over $100
30-day happiness guarantee
Apple Pay & Google Pay

Details

The colour change they'll want to show everyone. Our Kids' Originals are boys' swim shorts printed with a thermochromic (heat-reactive) pigment. A splash of water or the sun changes the colour instantly, then cool water switches it straight back. Expect a lot of cannonballs.

Why parents love them

Changes colour instantly: every splash and cool-down is a little science experiment
Quick-dry fabric: ready for round two after lunch
Full elastic waist with drawcord for a secure, comfy fit
Made to match: Purple to Blue and Orange to Yellow, the same as dad's Original

Colours

Purple to Blue
Orange to Yellow

Fit & sizing

Kids' sizes go by age: S (3 to 4), M (5 to 6), L (7 to 8), XL (9 to 10) and 2XL (11 to 12), with a full elastic waist and drawcord. Between sizes? Size up for room to grow, and check our size guide. Not quite right? Our 30-Day Happiness Guarantee has you covered.

Care

Rinse in cool fresh water after a swim and dry in the shade. Skip hot washes, tumble dryers and the iron, as heat can wear out the colour change over time.

Shipping

Free shipping Australia-wide on orders over $100. Delivery options and costs are shown at checkout, and we'll email your tracking link as soon as your order ships.

Happiness guarantee

Not quite right? Tell us within 30 days of delivery. If a pair arrives faulty or damaged, we'll replace it free. If the size or colour isn't what you hoped, we'll send you a one-time code for 25% off your next order. See the full guarantee.

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The switch

Same shorts. Just add sunshine.

Shown here on dad's Original. The kids' pair makes the same switch in the same colours. Drag across the photo to see both sides.

Drag across a pair

Purple to Blue

Choose Purple to Blue

Orange to Yellow

Choose Orange to Yellow

For the minis

Every warm-up and cool-down is a little science experiment.

Quick-dry fabric and a full elastic waist with drawcord, ready for round two after lunch.

Got questions?

Ask us anything

How do they change colour?

They're printed with a thermochromic (heat-reactive) pigment. Cool, they show their first colour. Warm them up in the sun or in warm water and they shift to the second, then cool water switches them back. Here's how it works.

Will the colour change wear out?

Look after them and they'll keep changing. Rinse in cool water, dry in the shade and skip hot washes, dryers and the iron.

What size should I get?

Men's come in S to 3XL and kids' in S to 2XL, sized by age from 3 to 12. On the Dad & Mini set you choose each size separately. Between sizes? Size up for a relaxed fit.

Can dad and the kids match?

Yes. Purple to Blue and Orange to Yellow also come in dad's Original, or grab both in one go with a Dad & Mini set.

Do you offer free shipping?

Free shipping Australia-wide on orders over $100. We'll email tracking as soon as your order ships.

What if they don't fit?

Please check the size guide before you order, as we don't swap sizes. If the fit isn't right, tell us within 30 days of delivery and we'll send you a one-time code for 25% off your next order. It's part of our 30-Day Happiness Guarantee.

Dad & Mini