What kind should I get? A floppy hat that protects your face, ears, and the back of your neck from the sun. It doesn't have to protect the back of your neck if your pack is big enough to block sunlight. Some spf 30 or more sunscreen is perfect for what you'll be doing. You don't need much of it. I have a little travel size tube of sunscreen and I have only had to refill it once!