Originally Posted by Hyde

What reason is there to wear dark, heavy clothes that cover most of your body in the desert? I very much doubt humility is the reason. I just don't see this discussion going anywhere, he's brainwashed to the point where he's denying logic.

Assembling Your Wardrobe: Clothing to Protect Against the Sun

Here are some general rules for selecting clothes to keep out UV radiation:

Tight weaves are better than loose weaves (if you can see through it, UV can get through it).
Polyester is better than cotton.
Dark colors are better than light colors.
Dry clothing is better than wet clothing.
Choose outfits with long sleeves and long pant legs and collars to get as much protection as possible. Loose clothing can help you stay more cool, even when you are covered up.
Always wear a hat, because your face and head get so much sun exposure.
A hat made with a light colored material on the outside to reflect UV radiation and keep you cooler, and a darker lining on the brim to prevent UV radiation from reflecting on your face
A wide brim of at least three inches
No hats or clothing made of netting, mesh, or other loose weaves because they offer little or no UV protection
Obviously, dark, tightly woven polyester is not something you are likely to wear out in the hot sun. And if your clothing is so uncomfortable that you take it off, it doesn't matter how much protection it would have given you. There is clothing that may be more comfortable and that has been designed especially to protect you from the sun. Such clothing is made from fabrics that have been treated with chemical UV absorbers, known as colorless dyes, which prevent some penetration of both UVB and UVA rays. The clothes are also designed to cover as much of the skin as possible.