Serious Sun Protection1

The Skin Cancer Foundation is the only international organization devoted solely to education, prevention, early detection, and prompt treatment of the world’s most common cancer. To earn their Seal of Recommendation, a manufacturer must provide scientific data showing that its product sufficiently and safely “aids in the prevention of sun-induced damage to the skin.” The data is reviewed by a volunteer committee of photobiologists — experts in the study of the interaction between UV radiation and the skin. Carkella's sun protection hats have received this seal of approval.

UPF Fabric Protection
The Ultraviolet Protection Factor (UPF) indicates how well a fabric protects your skin from solar UV. Look for the UPF icon on our hats to determine the UPF rating. These fabrics are tested by the Australian Radiation Protection Agency and block 96 to 97.5% of the sun’s ultraviolet radiation. Remember to safeguard the rest of your body by wearing sunscreen and sunglasses as your Carkella hat can only protect the skin it covers.

The Skin Cancer Foundation recommends several Carkella hats as effective protection against UV radiation.

The criteria to earn The Skin Cancer Foundation Seal of Recommendation includes:
  • An ultraviolet protection factor (UPF) of 30 or higher
  • Acceptable test results according to the American Association of Textile Chemists and Colorists method or AS/NZS Standard
  • For hats, in addition to the fabric requirements specified above, a minimum brim width of 3 inches


SPF stands for Sun Protection Factor
 and is the rating for sunscreens and other sun-protective products. It measures the amount of time it takes for sun-exposed skin to redden. SPF is for creams and cosmetics.

UPF measures the amount of UV radiation that penetrates a fabric and reaches the skin. The tightness of the weave, the weight, type of fiber, color and amount of skin covered all affect the amount of protection provided. UPF is for clothes and fabrics.