The Mammut Lithium 20L Backpack helps us get on the trail as much as possible. Certainly sometimes we won't be able to go camping but wet weather will never cause this. Mammut made this backpack with a raincoat to protect all our camping gear from wet weather. We also love Mammut's original detail: a phone pocket which extends from the hip belt providing quick and easy access to our phones when we see an animal running past.