Although not cheap, I have to say this Evoc trail builder pack is one of the best purchases I've made. If you are having to hike to in and out from where
Dakine Builder Pack - Review - Pinkbike
Dakine Builder Pack - Review - Pinkbike
Dakine Builder Pack 40L
Testing the Dakine Builder 40L Backpack for Trail Building and Chainsaws! - YouTube