tomboyx | Premium Underwear for All Day Comfort. Fit for You.

Cabana Shirt

Cabana Shirt - Main image
$48.3 $69 In stock

Category: swimwear

Reveal an aquatic surprise with our water-activated fabric. When dry, black keeps its secrets hidden. But splash some water on it, and watch as gray jellies emerge.

How It Works

Our innovative color-changing technology responds to water contact. The moment moisture hits the fabric, the previously invisible jellyfish print transforms from black to gray. Once dry, the fabric returns to its sleek, all-black appearance—ready to surprise again and again.

Your new favorite beach day companion. Made in the same durable, lightweight fabric as our 7” Board Shorts, it’s the perfect complement to whichever swimwear silhouette you pick. Throw it on to run to the snack bar, then keep it on for the rest of your vacation day.

  • Regular fit
  • Patch pocket at left chest
  • 90% recycled polyester, 10% spandex
  • OEKO-TEX® certified
  • Inclusive sizing from XS-4X
Before you pay

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When it ships

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Standard Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

Express Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

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Delivery costs

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Standard Shipping · United States: $0.00

Express Shipping · United States: $3.99

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Returning an item

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United States · Return window (days after delivery): 30. Return method: By mail. Return postage: Seller pays.

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Customer Reviews (4.4 / 5 · 5 reviews)

David S. ★★★★★

I tossed some pool water on the sleeve just to test it out, and the gray jellies appeared almost instantly — honestly way cooler than the photos suggested. The black fabric hides the design completely when dry, so it's a nice little surprise every time I dive in.

Richard T. ★★★★★

I wore it to the pool last weekend and the transition from plain black to those gray jellies in the water honestly made my whole group stop and stare. The fabric feels light and doesn’t cling awkwardly when it gets wet, which is exactly what I needed for a full day of swimming.

Ellie K. ★★★★★

The way the gray jellies pop out the second water hits the fabric is seriously the coolest thing—it’s like the shirt has a secret personality. I’ve worn it in the pool a few times now and it still dries back to plain black, so the surprise never gets old.