What to wear when hiking the Grand Canyon?

While hiking you should wear synthetic clothes. Synthetic clothing retains more heat when wet and dries faster than natural fibers. Your average poly-blend style shirt can dry in less than an hour where as cotton can take many hours to a day. The speed your clothing dries is very important for hiking, because temperatures can fluctuate rapidly and your body temperature will also fluctuate as you speed up and slow down. Getting caught in the cold with wet clothes is a recipe for disaster.

You should also make sure to wear many thin(er) layers as opposed to few thick layers. Layers allow you to more easily adjust your own body temperature by adding and removing them as needed.

Finally, make sure to always bring spare clothes (especially socks and underwear) in a water tight container. A large zip-lock bag or a commercial dry sack are fine for this purpose.

Check out the related link below, "Tips for Safe Hiking", for more info on what to pack for a hike.