Mountainsmith Zerk 40 Backpack Review

Mountainsmith Zerk 40 Backpack Review

The Mountainsmith Zerk 40 is a speed hiking backpack designed for ultralight thru-hiking. Weighing 25 oz, it has a roll-top closure, removable, hip belt strap, a running vest-style shoulder strap system, and removable foam framesheet. Numerous open mesh pocke…

Read More…