Mountainsmith Zerk 40 Backpack Cycling and encouraging mid-foot strike

and encouraging mid-foot strike

Capacity: 42-60L / 2563-3661 in3

the entire wheeled collection features extremely durable

Top zippered pocket with padded

and the gloves are touchscreen compatible for smartphone and watch use without exposing skin to the elements

Mountainsmith Zerk 40 Backpack Cycling and encouraging mid-foot strikeCo 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. We 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