UPF stands for Ultraviolet Protection Factor—a rating assigned to fabrics that measures how effectively they block the sun's broad-spectrum UV rays before they reach your skin. It’s similar to SPF, which rates sunscreen protection. Every fabric has a UPF rating, whether it’s listed or not. For example, the average white T-shirt has a UPF of just 3. SHADE’s proprietary fabrics, however, are rated UPF 40+, offering significantly higher protection.
What is UPF?
Several factors affect the sun protection level of clothing: the tightness of the weave, the type of fiber, color, and any special treatments applied to the fabric. Some materials, like unbleached cotton or certain polyesters, naturally block more UV, while others are enhanced through non-toxic treatments to boost their protective qualities.
How it Works
CottonUPF™
SHADE pioneered the first 100% cotton fabric with certified sun protection. Our proprietary CottonUPF™ formula has been verified as UPF 40+ under AATCC’s TM183 standards.
Through our research, we found most sun protective clothing contains some form of polyester or plastic, which is not only harmful to the environment, but not breathable for your skin.
The information available on this website, including but not limited to details about broad-spectrum rays and UPF, is general in nature and not intended to substitute professional medical advice. Please consult a healthcare provider for personalized guidance.
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