In a base layer or any clothing that comes into contact with the skin, it is crucial for the fabric to have the ability to draw moisture (sweat) away from your body and transfer it to the fabric's outer surface, allowing it to dry rapidly.
Clothing with an ultraviolet protection factor (UPF) rating can shield your skin from the harmful effects of the sun's UV rays.
For an outer layer or shell, these features help prevent rain from soaking your clothes and protect you from the chilling effect of wind that can strip away the heat your body generates.
