You've probably seen the UPF symbol on UV-protective clothing.
But do you understand what it means?
This symbol is very important when it comes to UV protection, so make sure you understand it!
UPF stands for Ultraviolet Protection Factor and is a rating index to indicate a garment's UV resistance.
UPF measures how much of the sun's UV radiation is absorbed or "blocked" by the fabric, effectively protecting the skin underneath. UPF ratings range from 15 to 50, and higher UPF ratings indicate better protection.
UPF 50+ rated clothing provides excellent UV protection.
UPF 50+ is the maximum achievable sun protection rating for a fabric. UPF 50+ means that only 1/50 or 2% of UV radiation can penetrate the tested fabric.
The fact that Claclac clothing sun protection exceeds all published standards worldwide for a UPF 50 rating. That means that when we tested fabrics and clothing, the factor was. Our UV protection goes beyond protection level 50.
However, since the certification standard is limited to UPF 50, we want you to know that protection goes beyond 50 by using the “+” symbol, so you know that our clothing can Blocks more than 98% of UV rays.
What is a UPF Rating?
The UPF rating is a system created to help users understand how well their clothing is protected.
At this point, you're probably wondering what the numbers really mean.
What is UPF 50 compared to UPF 10? The numbers in the ratings indicate how much of the sun's UV rays are absorbed or blocked by the fabric, thus preventing them from reaching your skin.
UPF is followed by a number.
For example UPF 50 means 1 out of 50 parts of UV reach the body. This means 1/50= 2%
If the product in question is UPF 10, that means 1 in 10 parts = 10% of UV rays reaching the body.
UPF 20 = 1/20 = 5%
UPF 30 = 1/30 = 3.3%
UPF 40 = 1/25 = 2.5%
UPF 50 is considered a good level of protection.
Only 2% of UV rays pass through to your body.
Does just one percent or one-half percent make a big difference?
The answer depends on how long you were exposed to UV rays. A small percentage difference over a long period of time is significant.
UPF RATE DOESN'T EXCEED 50+
UPF can exceed 50. UPF 50+ with + sign is very important. It means over 50. This could be 100% coverage, i.e. not even a part reaches the body.
If a fabric allows only 1% of UV rays to reach the body, that's 1/100, which is equivalent to UPF100. If it only allows 0.5%, then the rating is UPF200
Why isn't it specifically called? Currently, there is no official rating for clothing that completely blocks all UVA/UVB rays, so the maximum rating for any fabric with a UPF rating higher than 50 is 50+. 
Clalacc is UPF 50+ fabric technology, so you can be sure you'll get maximum sun protection with every purchase.
Be wary of any clothing brand that lists a number rating greater than 50. Neither of these are exact or official ratings for fabrics.
- The current maximum rating is 50+
- Clalacc offers top rated sun protection clothing
- Consider carefully the brands that claim to have ratings above 50
UPF WASTEED WITH SOME BRANDS
UPF can be washed. Cotton fabric shrinks after many washes, the holes between the fibers shrink so there is more UPF than before. If the garment is not handled well and stretches through different washing or drying processes, the holes can become larger and lose their properties.
Some fabrics cannot achieve UPF 50+ without certain chemical treatments, especially lightweight fabrics, certain fabric components and specific bright colors. If these chemicals are not firmly embedded in the fabric at the time of manufacture and are released after washing, UPF levels will decrease.
However, Clalac products do not have these concerns.
Clacla uses bamboo fiber fabric combined with high-quality cotton and spandex with high weaving technology to create an effective UV protection product that is not lost after washing.
What makes Greenyarn Bamboo Yarn special lies in the Syrup spinning technology. This technology maintains two separate yarns during spinning and allows some of the yarn binding mechanisms to work before the yarns are twisted together. This increases the strength of the yarn, making the finished product more durable.
So you can shop with confidence with our products.
At Claclac, our sun protection clothing blocks 98% of UVA/UVB rays and there's no need to worry about after many washes or whether you sweat a lot or use a lot.
Are you worried about aging skin caused by UV rays, please refer to the following article: What is skin aging? Is it due to UV rays?
Articles are referenced at: SKIN CANCER FOUNDATION