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Mountainsmith Zerk 25 Backpack - Black

Mountainsmith Zerk 25 Backpack - Black

Mountainsmith Zerk 25 Backpack

$189.95

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Mountainsmith Made Modern

The Mountainsmith Zerk 25 Backpack is the most technologically advanced hiking pack built with extra wide shoulder straps resembling trail running vests. Generously equipped with four pockets, dual sternum straps, and a removable waist belt, the Zerk 25 boasts multiple carry options securing a full day’s worth of gear or a layer and a snack for a post-work hike. There are two water bottle pockets on either side the pack, and the dual front stash pockets are perfect for layers. Mountainsmith angled the external pockets so you can access them on the trail. The Zerk includes bungee cords so you can sling the front cord loops, and the side compression straps secure your load for a bounce-free hike.

Features

  • Mountainsmith’s most technologically advanced backpack built for day hiking
  • Extra wide shoulder straps with dual sternum straps, four stash pockets, and a removable waist belt for customized carry
  • Lid top closure with side compression buckles and front buckle closure
  • Large water bottle side pockets and front stash pockets, all angled for easy, on-trail retrieval
  • Front cord loops can be configured with an included bungee cord
  • Side compression straps secure the load for a bounce-free hike

Specs

  • Best Use: Hiking
  • Volume: 25L (1526cu in)
  • Weight: 1lb 7.5oz
  • Capacity: 20lb
  • Dimensions: 20 x 12 x 9in
  • Torso Size: 16 - 24in
  • Waistbelt Size: 28– 48in

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Verified Buyer
October 3, 2025 by Byron H. (United States)
“smooth checkout”
Verified Buyer
October 2, 2025 by Rolla S. (CO, United States)
“Good”
Verified Buyer
October 1, 2025 by ASL (Utah, United States)
“I was blown away by how fast the helmet arrived at my house. I ordered it on a Sunday afternoon and it arrived Wednesday morning. I was not expecting that.

I found the Campman site when my usual go-to sites were sold out of the helmet I wanted - but Campan had it in stock and at a very fair price. Based on my first experience with Campman, they will now be part of my "go-to" site list when looking for outdoor gear.”

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