What's the best anti ultraviolet color of sun umbrella

 What's the best  anti-ultraviolet  color of sun umbrella  ?

1. The research confirms that the darker the umbrella is, the better the anti-ultraviolet effect is: the ultraviolet transmittance of black umbrella is 5%; the ultraviolet transmittance of Tibetan blue, red, dark green and purple umbrella is 5%-10%; and the ultraviolet transmittance of green, light red, light green and white umbrella is 15%-20%. Under the same conditions, the darker the fabric, the better its anti-ultraviolet performance. In contrast, black, cyan, dark green is better than light blue, light pink, light yellow and other anti-ultraviolet properties.

2. Other common sense in choosing sunscreen umbrellas:

(1) Look at the protection index: Look at the label. Looking at the protection index, i. e. UPF and UVA value, UPF is more than 40, and the transmittance of UVA is less than 5%. The higher the UPF value, the better the anti-ultraviolet performance.

(2) Fabric for umbrella viewing. The thicker the umbrella surface, the tighter the fabric, the better the anti-ultraviolet performance of the fabric. Compared with other fabrics, polyester is more sunscreen. In addition, the deeper the shadow of the umbrella in the sun, the lower the transmittance, the better the sunscreen effect.

(3) Look at the color. Dark umbrella has better anti-ultraviolet effect under the same fabric.

The most common colors of our outdoor sun umbrellas are wine red, green, khaki, brown and so on.

(4) Look at the weaving method of sunscreen umbrella fabric: Satin fabric has the best anti-ultraviolet performance, such as shading, followed by twill and plain.