The Science Behind UPF 50+ Rating: What Does It Mean?

On a bright, sunny day, when you’re outside engaged in various activities, it is essential to consider the impact of prolonged sun exposure on our skin. 

While sunscreen is a go-to solution, have you ever thought about the role your clothing plays in sun protection? Some clothing protects skin better than others. Ultraviolet Protection Factor (UPF) 50+ is the gold standard rating in sun-protective clothing. Read on to learn about the science behind UPF 50+, explore its significance, and understand why it's a game-changer for sun safety. 

UPF Rating Explained

UPF is a numerical rating that indicates how effectively a fabric blocks Ultraviolet (UV) radiation from the sun. Similar to Sun Protection Factor (SPF) in sunscreen, UPF is an indication of how much a fabric will protect you against harmful UV radiation. The higher the UPF rating, the greater the protection.

UPF 50+ is the highest possible rating for a fabric. To achieve this rating, the fabric must block at least 98%-100% of UV radiation. Lower-rated UPF clothing is less effective at blocking UV radiation, thus letting more of the UV radiation through the fabric and onto your skin. This sun exposure through the fabric can damage your skin.

What Sets UPF Clothing Apart?

When it comes to safeguarding your skin from the sun, not all clothing is created equal. UPF clothing is specially designed to provide enhanced protection against the sun's harmful UV rays. Unlike regular clothing, Certified UPF clothing undergoes rigorous testing to determine its level of UV protection.

For example, a regular cotton t-shirt is rated only UPF 6, meaning 1/6th (or 17%) of the sun’s UV radiation can penetrate through the fabric and damage your skin. A UPF 30 rating allows only 3% of the sun’s radiation to penetrate, thus protecting you against 97% of the sun’s UV radiation. The gold standard is UPF 50+ which blocks up to 100% of UV radiation and is the ideal protection for at-risk people who want to stay protected from both UV rays.

UPF Testing and Certification

Before a garment can boast a UPF rating, it goes thorough testing to evaluate its UV-blocking capabilities. This testing considers factors such as the fabric type, color, construction, and weight. Once it is evaluated, it receives a UPF rating, informing consumers of its sun-protective properties.

The American Association of Textile Chemists and Colorants (AATCC) has a standard test method, known as TM 183, which evaluates transmittance or blocking of UV radiation through fabric. Belesun fabrics are evaluated against this test method in order to receive its Certified UPF 50+ rating. Belesun fabric also has AATCC certifications for colorfast, moisture wicking, antibacterial and 4-way stretch. (In addition, Belesun fabric is also certified by the global OEKO TEX Std 100 label, meaning it has undergone rigorous testing for harmful substances to protect your health.)

In contrast to regular clothing, which may provide some level of protection but often allows significant UV penetration, UPF clothing is specifically designed to act as a barrier against the sun's harmful rays. When the clothing has certifications in the labeling, such as Certified UPF 50+ the clothing will provide the highest level of protection.

6 Tips to Stay Protected from the Sun

So, what else can you do to keep yourself and your family protected from UV rays? We’ve compiled a list of sun-smart living tips to help:

1. Check the Weather and UV Index Beforehand: Before you go outside, pay attention to the UV index and when it will be at peak times. You can find this information in most weather apps. The World Health Organization’s recommends a person should cover up with a hat and protective clothing when the UV index measures at levels of 3 (Moderate) or higher. 
2. Avoid Peak Hours in the Sun: Note when the sun will be the strongest and avoid going outside at peak times to minimize exposure. Try and avoid being outdoor when the UV index is highest during the middle of the day. 
3. Wear Sun Protective Clothing and Belesun Sun Sleeves:  Cover your skin with sun protective clothing. Keep your arms covered with long-sleeved shirts made with Certified UPF 50+ fabrics. Our Belesun collection offers a stylish array of options, ensuring your protection without compromising on fashion. For added coverage while wearing short-sleeve shirts, consider wearing sun sleeves – a versatile accessory that safeguards your arms from harmful UV rays. Explore our sun sleeve collection to find the perfect complement to your wardrobe. You can even enjoy peeking at your smart watch with the optional watch slit on either hand. 
4. Cover Your Neck, Face, and Hands: When you’re out in the sun for extended periods, be sure to protect your neck, face and hands from the sun. Pay attention to your forehead, nose, ears, chin, and your hands as often the sun rays can reflect onto these delicate areas or sunscreen may wear off. Keep your neck covered with a sun protection neck gaiter from Belesun or neck drape hat attachment or wear a UPF-certified face mask for complete coverage. Bonus: pull the sun sleeve over the knuckles to protect the top of your hands while in direct sun.
5. Regularly Apply Sunscreen: While UPF clothing provides a robust defense, it is essential to protect exposed areas with sunscreen. Remember to reapply regularly, especially during extended outdoor activities.
6. Certified UPF 50+ Assurance: When shopping for sun protection clothing, insist on Certified UPF 50+ products. This guarantees not only optimal protection but also ensures the quality and effectiveness of the fabric.

At Belesun, we take pride in offering a comprehensive solution to your sun protection needs. Our UPF 50+ clothing keeps you shielded from harmful UV rays with a touch of style. Embrace sun-smart living and explore our collection to elevate your sun protection game. Stay protected, stay stylish!