Frequently Asked Questions

UPF is measured on a scale. A UPF rating from 20-49 is considered very good protection, while UPF 50 (which blocks 98% of the sun's harmful UV rays) is considered excellent protection. Our sun shirts begin at UPF 30 in the lightweight material then increase to UPF 50 in the medium weight material. This way, you can choose the level of protection and comfort in your sun-safe apparel to suit your personal needs.

As a brand who prioritizes safety and protection, we strongly endorse the use of additional sun-protective elements while wearing your Kastel shirts. Sunscreen, a wide-brim hat, and even gloves will further enhance your coverage from the damaging UV rays.

To learn more about how to effectively protect your skin from sun damage, please review this information from the American Cancer Society.

Our highest priority is to deliver a product that is both beautiful and safe. To this end, we have worked hard to create shirts that are both protective and fashion-forward. In addition to the UPF factors of our material, we have integrated technical elements like four-way stretch for comfort and range of motion; breathable and cooling moisture control; and anti-bacterial engineering to keep you clean and odor-free.

Our styles are derived from timeless silhouettes, modern prints and the rich colors of nature. We search the globe for inspiration, focusing on both the fashion capitals and hidden getaways that deliver a sense of elegance and unique artistry. When you #SportTheCrown, you are supporting the work of a female-operated company that has worked tirelessly to provide you with the best style, fit, comfort and protection possible. When you shop Kastel, you’ll find a collection that has seamlessly blended elevated style with essential everyday protection.