Zerk 40

Mountainsmith Zerk 40 Liter Lightweight Hiking Backpack

Co-designed with The Real Hiking Viking, a professional hike-really-long-distances-really-quickly-er, the ZERK 40 was born out of a need for an ultralight pack that can withstand the thousands of miles per year that The Real Hiking Viking already covers. Mountainsmith wanted to make sure that it would allow him to go farther, to hike longer, and to work more efficiently on the trail. Over the course of 2 years of development, the ZERK 40 went through 4 iterations and over 5,000 miles of testing on the Wind River High Rout, the Colorado Trail, The Tetons, and more.

Features

• 1.5” removable waistbelt
• Large main compartment holds up to 40 liters of gear
• Roll top closure with side compression SR buckles. Opposing SR buckles for self-closing roll top
• Side compression straps for securing load throughout entire pack
• Large side water bottle pockets with angled opening to easily remove and insert items while on the go
• Expansive front mesh pocket for hauling bulky gear
• Large mesh side stash pockets with angled opening for easy reach
• Reflective screen printing and cord loops for low light visibility
• Front cord loops can be configured with bungee cord (included)
• Removable interior laser cut frame sheet (EVA Atilon) allows for rigidity and airflow
• Extra wide shoulder straps with adjustable sternum strap (includes safety whistle)
• 4 Large mesh front pockets on shoulder straps (2 per side)
• EVA foam padded shoulder straps
• Removable bear canaster and accessory over-top webbing straps with SR buckle closure
• Front panel bungee attachment system

Materials

• 210d EXTREEMA Recycled Nylon Ripstop (UHMPE)
• Recycled 210d nylon SD oxford
• Nylon 100D x Span 840D stretch mesh 

Dimensions

• 18.5" x 11.75" x 5.75"
• Waistbelt max 48"
• Torso range 16" - 19"

Volume

• 40 L / 2440 CI with fully extended collar
• 32L / 1952 CI with roll-top compressed

Capacity

• Up to 30lbs

Weight

• 1lb 13oz with accessories, 1lb 11oz without accessories