Summary: Key Indicators for UV Protection Clothing
When selecting UV protection clothing, focus on these six essential factors:
UV Protection
Wash Resistance
Lightweight
Breathability
Quick-Drying
Cool Sensation
Material Tips:
Opt for yarn-based UV protection fabrics for better wash resistance; avoid coated fabrics as they are less durable and breathable.
A UPF rating of 50+ is sufficient—don't chase higher numbers unnecessarily.
Pay attention to UVA and UVB transmission rates, particularly aiming for a UVA transmission rate of less than 5%.
Nylon is the preferred material for comfort and breathability, especially in knitted structures.
Detailed Explanation:
I. How Do UV Protection Clothes Work? The fabric of UV protection clothing typically falls into three categories:
Yarn-Based Fabrics: Incorporate materials that absorb or scatter UV rays during the fiber production process.
Coated Fabrics: Have a layer of UV blocking agents applied to the fabric surface, similar to a UV protection umbrella.
Post-Treatment Fabrics: Are immersed in UV-blocking chemicals post-manufacturing.
Among these, yarn-based fabrics offer the most durable UV protection. Coated and post-treated fabrics tend to lose their effectiveness after several washes, and coated fabrics are often less breathable, compromising comfort in hot weather. Conclusion: Choose yarn-based UV protection clothing and avoid coated options.

II. Understanding UPF and UVA Transmission Rates Ultraviolet rays are classified as UVA, UVB, and UVC, with UVA and UVB being the most harmful. UVA rays cause tanning, while UVB rays lead to sunburn. According to GB/T 18830-2009, for a product to be classified as "UV protective," it must meet two conditions:
UPF must exceed 40.
Average UVA transmission rate (T(UVA)AV) must be less than 5%.
In short, a UPF rating of 50+ is adequate (with a minimum standard of 40), and focus on the UVA transmission rate (aim for <5%).

III. Balancing Protection and Comfort
The ideal UV protection clothing should not only provide sun defense but also prioritize factors like lightweight, breathability, quick-drying, cool sensation, and wash resistance. The fabric structure affects comfort, with woven fabrics being denser and less breathable, while knitted fabrics are more flexible, comfortable, and breathable. Currently, nylon knitted fabrics are becoming the preferred choice for UV protection clothing. Recommendation: Prioritize nylon knitted fabrics for UV protection clothing.