Swim 4.5" Shorts - Dinosaur Magic
Reveal a prehistoric surprise with our water-activated Dinosaur Magic fabric. This isn't just any black board short—it's a wearable transformation waiting to happen. When dry, these swim shorts keep their secrets hidden. But splash some water on it, and watch as gray dinosaurs emerge! As the fabric dries, the dinosaurs gradually disappear back into the darkness, ready for their next appearance.
How It Works
Our innovative color-changing technology responds to water contact. The moment moisture hits the fabric, the previously invisible dinosaur print transforms from black to vibrant color. Once dry, the fabric returns to its sleek, all-black appearance—ready to surprise again and again.
Every splash becomes an adventure with this conversation-starting piece. Pack it for your next vacation or wear it to your weekend plans—whenever water might appear, your dinosaur friends are ready to make an entrance.
Our popular 4.5” swim shorts gives you two styles, solid coverage, and a great fit that doesn’t ride up or chafe.
- Smooth, durable flatlock seams won’t irritate or chafe
- Fit-tested on all body types, sizes XS-6X
- Quick dry, 4-way stretch fabric
- UV Protection, UPF 50
- 80% Recycled Polyester, 20% Spandex, OEKO-TEX®-certified fabric
- Uses polyester made from recycled bottles
- Machine wash cold, Machine dry low temperature or hang dry
- This style runs snug - order one size larger for a more relaxed fit

Machine Wash Cold with like colors
Tumble Dry Low with like colors
All product life span is improved with hand wash and lay flat drying, but if
you don’t have the ability or time, delicate wash in your washing machine is fine and low tumble in the dryer. This also extends the life of your prints.
High heat can damage the spandex and break it down or lose the retention quality.
For any technical fabrics, fabric softeners break down the performance properties. Stay away from added fabric softeners, in general.
For more details on things like our glow-in-the-dark prints, swim, Solarmesh, etc. please see our Wash & Care Guide.