Building mountain bike trails calls for a durable backpack that can haul heavy loads-one like Evoc's Trail Builder 35. Made with 1000-denier Cordura nylon, the Trail Builder 35 can put up with plenty of abuse and carry a ton of tools, including attachments for our axe, hammer, hedge clipper, chain saw, and protectors. Its ergonomic build lets us carry our load safely on our back as we're biking to and from our work site to lay down some singletrack, build some berms and bomb holes, and construct some shoots and rock gardens to elevate our favorite trails.