How We Know SunClad Really Works: A Look Inside Our Testing Process

When we created SunClad, we knew it wasn’t enough to simply believe in it. We had to prove it. Sun protection is about people’s health, and that meant putting SunClad through rigorous, credible testing. Here’s how we did it.

Working with a Trusted Lab

We worked with TÜV SÜD, a globally recognized third-party testing lab with more than 150 years of experience and 25,000+ employees worldwide. Choosing a reputable lab was non-negotiable for us—because your trust matters.

Testing on Everyday Fabrics

We wanted to recreate the real-life conditions of your wardrobe, so we tested SunClad on cotton, cotton-polyester blends, and linen.

Simulating a Wash at Home

The fabrics were washed under the following conditions:

• Temperature: 60°C on a gentle cycle for 41 minutes
  
• Load size: 2.5 kg (a small to medium load)
  
• Detergent: standard consumer detergent
  
• Sun protection: one SunClad pod
• Drying: tumble dried after wash

Recreating Sunlight in the Lab

To measure the difference, the washed fabrics were placed under simulated sunlight. The test used a combination of tungsten-halogen and deuterium lamps, which together cover the full UVA and UVB spectrum that reaches your skin outdoors.

The fabrics were then measured with a PerkinElmer Lambda 950 spectrophotometer—a precise machine that calculates how much UV radiation passes through.

The Results*

All three fabrics we tested showed a meaningful increase in UPF rating after each wash with SunClad.

*Actual UPF improvement achieved at home may vary depending on fabric type, washing machine, and washing conditions.

Why This Matters

We wanted proof that SunClad really transforms your everyday clothes into a shield against the sun—and we got it. The testing confirmed what we hoped: SunClad can make everyday fabrics as protective as specialized UPF clothing without changing the way they look or feel. That means you can enjoy the outdoors in the clothes you already own and love!