This fabric is using UV-Cut fiber that could isolate UV ray and reduce thermal transmission to provide excellent skin protection and comfortable cool performance.
This high tech fiber is washable and withstand long term.
The amount of Ultraviolet Protection Factor (UPF) indicates the time length of a garment protects from solar radiation. For example, a garment with UPF 1 that means wearer will be protected from sunlight for about 10 minutes. If you are wearing a garment with UPF 20 that means you can stay in the sun for 200 minutes (Approx. 3 hours) without problem. Therefore, for people who need to stay outdoor whole day may need to wear UV-Cut functional cloth which can meet UPF 40↑.
UV-Cut fabric has 3 ratings of UV-cut hang tag, based on different UPF rating (as the table below), due to fabric structure / cover rate will affect fabric UV-Cut ability.