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Changing Swim Shorts
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Variant guide
Swim shorts size and fit guide
S | US 36 / EU 46
Smallest size in this men's swim shorts size run.
- Recommended for
- Pick this if your chest is about 88-94 cm and waist about 74-80 cm, or if you usually wear US 36 in the United States or EU 46 in Europe (France) in men's swim shorts. If you are between sizes, size up for a relaxed fit.
- Fit
- Colour-changing swim shorts with an elastic waist; relaxed beach fit.
- Dimensions
- Approximate standard sizing: chest 88-94 cm, waist 74-80 cm. US 36 (United States) · EU 46 (Europe, incl. France). cm follows the European system.
- Notes
- This row is US 36 (United States) = EU 46 (Europe). Match it to your usual men's swim shorts size.
M | US 38 / EU 48
Mid-run size in this men's swim shorts size range.
- Recommended for
- Pick this if your chest is about 94-100 cm and waist about 80-86 cm, or if you usually wear US 38 in the United States or EU 48 in Europe (France) in men's swim shorts. If you are between sizes, size up for a relaxed fit.
- Fit
- Colour-changing swim shorts with an elastic waist; relaxed beach fit.
- Dimensions
- Approximate standard sizing: chest 94-100 cm, waist 80-86 cm. US 38 (United States) · EU 48 (Europe, incl. France). cm follows the European system.
- Notes
- This row is US 38 (United States) = EU 48 (Europe). Match it to your usual men's swim shorts size.
L | US 40 / EU 50
Mid-run size in this men's swim shorts size range.
- Recommended for
- Pick this if your chest is about 100-106 cm and waist about 86-92 cm, or if you usually wear US 40 in the United States or EU 50 in Europe (France) in men's swim shorts. If you are between sizes, size up for a relaxed fit.
- Fit
- Colour-changing swim shorts with an elastic waist; relaxed beach fit.
- Dimensions
- Approximate standard sizing: chest 100-106 cm, waist 86-92 cm. US 40 (United States) · EU 50 (Europe, incl. France). cm follows the European system.
- Notes
- This row is US 40 (United States) = EU 50 (Europe). Match it to your usual men's swim shorts size.
XL | US 42 / EU 52
Mid-run size in this men's swim shorts size range.
- Recommended for
- Pick this if your chest is about 106-112 cm and waist about 92-98 cm, or if you usually wear US 42 in the United States or EU 52 in Europe (France) in men's swim shorts. If you are between sizes, size up for a relaxed fit.
- Fit
- Colour-changing swim shorts with an elastic waist; relaxed beach fit.
- Dimensions
- Approximate standard sizing: chest 106-112 cm, waist 92-98 cm. US 42 (United States) · EU 52 (Europe, incl. France). cm follows the European system.
- Notes
- This row is US 42 (United States) = EU 52 (Europe). Match it to your usual men's swim shorts size.
XXL | US 44 / EU 54
Mid-run size in this men's swim shorts size range.
- Recommended for
- Pick this if your chest is about 112-118 cm and waist about 98-104 cm, or if you usually wear US 44 in the United States or EU 54 in Europe (France) in men's swim shorts. If you are between sizes, size up for a relaxed fit.
- Fit
- Colour-changing swim shorts with an elastic waist; relaxed beach fit.
- Dimensions
- Approximate standard sizing: chest 112-118 cm, waist 98-104 cm. US 44 (United States) · EU 54 (Europe, incl. France). cm follows the European system.
- Notes
- This row is US 44 (United States) = EU 54 (Europe). Match it to your usual men's swim shorts size.
XXXL | US 46 / EU 56
Largest size in this men's swim shorts size run.
- Recommended for
- Pick this if you usually wear US 46 in the United States or EU 56 in Europe (France) in men's swim shorts. This is an extended size beyond the standard chart, so measure your chest and waist if you are between sizes.
- Fit
- Colour-changing swim shorts with an elastic waist; relaxed beach fit.
- Dimensions
- Extended size. US 46 (United States) · EU 56 (Europe, incl. France). No confirmed body chart at this size, so measure your chest and waist against a well-fitting garment.
- Notes
- This row is US 46 (United States) = EU 56 (Europe). Match it to your usual men's swim shorts size.
Wet To Color
Hit Water, Change Color
Color Change
The Wet Color Shift
In The Water
Made For The Pool
Product information
Frequently bought together
You walk dry to the edge of the pool, dive in, and surface to find the shorts have switched to a whole new color.
These are temperature changing swim shorts, dyed so the color shifts the moment the fabric gets wet. Dry on the deck they show one shade, and as soon as you hit the water they turn to the second, then fade back as they dry off in the sun.
The trick is in the dye, which reacts to water so the change reads clearly in front of everyone at the pool or the beach. Each option pairs two shades, like the yellow-green that shifts as it wets, so you get a different look in and out of the water. The shorts come in six color combinations across sizes S to XXXL.
Key Benefits
- Color shifts when wet The dye reacts to water so the shorts change shade the moment you go in.
- Two looks in one A dry color on the deck and a second color in the water, then back as they dry.
- Crowd-pleasing trick The change is visible enough to turn heads at the pool or the beach.
- Six combinations Choose from yellow-orange, green blue, blue purple, pink purple, yellow-green and ocean-blue shifts.
- Wide size run Sizes S through XXXL cover a broad range of fits.
- Built for the water Made to be worn in the pool and the sea, not just on dry land.
Best for: anyone who wants a fun pair of swim shorts that change color in the water at the pool, the beach or a holiday.
Why It Works
The whole point of these shorts is the reveal, and the water-reactive dye delivers it every time you go in. Because each option is built around two shades, you get a visible before-and-after rather than a subtle tint, and the effect resets as the fabric dries so it works trip after trip.
Quick Product Facts: Type: temperature changing swim shorts; Effect: color shifts when wet, fades back when dry; Color shifts: yellow-orange, green blue, blue purple, pink purple, yellow-green, ocean-blue; Sizes: S, M, L, XL, XXL, XXXL; Worn for: pool and beach.
How It Fits Your Routine
Wear them dry to the poolside in the first shade, then watch them turn the moment you jump in. Climb back out and they slowly fade to the dry color again as the sun does its work.
They are the kind of shorts that get a reaction, so they suit a pool party, a beach day or a holiday where the trick is half the fun. Splash, dunk, and the change happens in front of everyone.
Rinse them in fresh water after swimming to clear the salt or chlorine, and let them air dry so the dye keeps reacting cleanly the next time you go in.
FAQ
How do they change color? The dye reacts to water, so the shorts switch to a second shade when wet and fade back as they dry.
Is the change permanent? No. It is reversible, shifting one way when wet and back again once dry, again and again.
What colors and sizes are there? Six color shifts including yellow-orange and ocean-blue, in sizes S through XXXL.
How do I care for them? Rinse in fresh water after swimming and air dry to keep the color-change effect working.
| Feature | Details |
|---|---|
| Type | Temperature changing swim shorts |
| Effect | Color shifts when wet, fades back when dry |
| Reversible | Changes and resets again and again |
| Color shifts | Yellow-orange, green blue, blue purple, pink purple, yellow-green, ocean-blue |
| Sizes | S, M, L, XL, XXL, XXXL |
| Worn for | Pool and beach |
| Care | Rinse in fresh water and air dry |
Have a question?
Our common questions
Is free shipping available?
Is free shipping available?
Yes, delivery is free for all orders, worldwide, and we always dispatch on the fastest tracked shipping line available for your destination. Most orders to the United States, Canada, Europe, the UK, Australia and New Zealand arrive within 5 to 8 business days after dispatch; some destinations and remote areas can take 10 to 20 business days. The most accurate estimate is the delivery window shown on each product page. View our Shipping and Delivery page for full conditions.
Is the product I'm looking for in stock and available?
Is the product I'm looking for in stock and available?
You will be able to tell on the product page whether or not a product is in stock and available, as the availability of the product will be listed as the number of products in inventory, "Out of stock".
What are your return policies?
What are your return policies?
You may request a return within 30 days of delivery. Return authorization is free, but customers pay return shipping costs unless the item arrived damaged, defective, or incorrect. Refunds or exchanges are available after inspection and approval for eligible items.
When will I receive my order?
When will I receive my order?
Most orders to our main markets (United States, Canada, Europe, United Kingdom, Australia and New Zealand, East Asia) arrive within 5 to 8 business days after dispatch. Some destinations, parts of the Middle East, South America, Africa, and remote or island areas, typically take 10 to 20 business days. The most accurate estimate is the delivery window shown on each product page, it already includes preparation time. You receive a tracking number by email as soon as your order ships.
Who are your suppliers?
Who are your suppliers?
We work with a carefully selected network of international fulfillment and logistics partners, chosen for speed and reliability. We do not claim to be an authorized retailer of every brand; we select each product for its real value, condition, and dependable delivery.
Is express shipping available?
Is express shipping available?
We currently focus on one reliable service: free standard shipping worldwide, with email tracking, always dispatched on the fastest tracked line available for your destination. We do not offer a separate paid express option at this time. The estimated delivery window for each item is shown directly on its product page.
How can I get after-sales service for a product I bought in your store?
How can I get after-sales service for a product I bought in your store?
Yes, contact us first at contact@moko.boutique with your order number. Our team handles your request directly and, where a manufacturer's warranty applies, we coordinate with the manufacturer for you. You are never left to handle it alone.
Do you have a physical store?
Do you have a physical store?
Moko Boutique is a 100% online store; that is how we keep free worldwide shipping and fair prices. Everything we sell is on www.moko.boutique, and our support team answers 7 days a week at contact@moko.boutique.
Can I redeem a coupon with you online ?
Can I redeem a coupon with you online ?
Yes. Coupons can be redeemed at checkout.