Hi! As heatwave scorches Europe, the second problem I’m a little afraid of (especially as someone without any melanin in my skin) is the sun. I’ve seen someone mentioning a sun shirt but trying to find real information online is very confusing, especially with EU in mind ( I see US has something called UPF) and if you are not looking for ads. Maybe someone knows something about it?
The fact they they are white actually detracts from the UV-proofness. Light colours block the least UV.
If the fabric is dense enough and the absorption is obviously measured for the upf rating that’s fine. Lighter colors protect the wearer from heat. That’s why you see native Africans usually draped in light colors.