Co-designed with The Real Hiking Viking, the ZERK 40L, part of our ZERK UL Series, has been torture tested & painstakingly developed thru 10's of thousands of thru-hiking miles; keeping you going faster, longer and more efficiently on your next ultralight adventure. Now with increased modularity, new UL materials and additional convenience on the trail.

• 12” x 20” x 9” (L x H x D)
• Roll top closure with opposing SR buckles for self closing roll top or for side panel attachment with removable straps
• Extra wide shoulder straps with dual adjustable sternum straps
• 4 Large mesh front pockets on shoulder straps (2 per side) accommodate 500ml bottles, bear spray, cell phones, gps units, etc
• Airflow EVA foam padded shoulder straps
• Modular side compression straps (removable) for securing load throughout entire pack or discarding entirely