Most people think they can cover up with any old thing in the sun and be protected, but that simply isn't true. The average white T-Shirt or dress has a UPF rating of between 5 and 15 - allowing as much 1/5th of the sun’s UVR to pass through—even more when wet.
The amount of protection fabric provides depends on the type of fabric and the weave or knit of the fabric.
And that my friends, is the IdleBird difference. Where you are covered with one of our garments you are protected - UPF50+ protected.