Short answer: yes. Longer answer: here is how they work, what the numbers mean, and what to look for so you get protection you will actually wear.

What UPF Means

UPF stands for Ultraviolet Protection Factor. It measures how much UV radiation a fabric lets through to your skin. A shirt rated UPF 50 blocks about 98% of UV rays. For comparison, a plain white cotton tee is usually around UPF 5, which means it lets a lot more sun through than most people think.

How Sun Protective Clothing Works

It is mostly about construction. Tightly woven fabrics, certain fibers, and sometimes UV-absorbing treatments all work together to stop rays before they reach your skin. Unlike sunscreen, it does not wash off in the water, wear off when you sweat, or need reapplying every two hours. You put it on, and you are covered. Part of that is absorption, where the fabric soaks up UV rays and turns them into harmless heat, and part is reflection, where the tight weave bounces rays away before they reach your skin.

Does the Protection Wash Out?

In a well-made garment, no. Quality UPF clothing is tested to hold its rating through normal washing. Follow the care instructions on the label (usually cold wash, hang or tumble dry low) and the protection lasts the life of the shirt. Cheap shirts with sprayed-on treatments can lose effectiveness over time, which is one reason to buy from a brand that builds UPF into the fabric itself.

What to Look For Before You Buy

• UPF 50 rating. That is the highest standard rating and the one worth paying for.
• Coverage. Hoods and long sleeves protect the spots sunscreen misses, like your neck and ears.
• Comfort. If it is hot and scratchy, you will not wear it. Look for lightweight, fast-drying fabric.
• A look you like. This is the underrated one. The best sun shirt is the one you reach for, so pick a design you would wear to the beach bar, not just the boat.

Why It Matters on the Water

Water reflects UV rays back at you, so anglers, boaters, and beachgoers get hit twice. A UPF 50 shirt or hoodie is the simplest way to cut that exposure without living in a cloud of sunscreen spray.

Coastal Crew UPF 50 shirts and hoodies are fast drying with simple, classic designs, built to go from the water to the beach bar. Shop the collection at coastalcrew.com/collections/sun-shirts.