Some brands even have hip padding for protection in falls. All-terrain biking shoes. Optional, but they improve biking efficiency significantly and give you more stable platform when riding downhill. Also, expect weather to change quickly in the mountains. It can be hot, dry cold and wet in one day.
Storms move in quickly and leave just as fast.
Layering, is the key to successful dressing. Cotton is good in warmer weather. Long sleeves protect you better in a fall, and can be pulled up for climbing. A mid-weight Polypro is great for cold and wet weather. Cotton is good in warmer weather.