$224.95
Members get an est. $22.49 in rewards

Now on its 5th generation of design upgrades, the Mountainsmith Zerk 40 pack just keeps getting better. It's built with ultralight and durable materials that let you go faster, farther on the trail.

Color: Black
Size: One Size
Quantity
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Members get an estimated $22.49 (10%) back on this item.
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Features

  • Removable waistbelt
  • Side compression straps
  • Removable framesheet
  • 4 shoulder-strap pockets
  • Roll-top closure
  • Front cord loops can be configured with included bungee cord

Imported.

View all Mountainsmith Backpacking Packs

Technical Specs

Best Use

Backpacking

Frame Type

Frameless

Ultralight

Yes

Gear Capacity (L)

40 liters

Gear Capacity (cu. in.)

2,380 cubic inches

Weight

1 lb. 9 oz.

Fits Torso Length (in.)

16-24 inches

Fits Waist/Hips

28-48 inches

Material(s)

210-denier EXTREEMA recycled nylon ripstop

Reservoir Compatible

Yes

Pack Access

Top

Number of Exterior Pockets

9 + main compartment

Raincover Included

No

Dimensions

22 x 14 x 10 inches

Gender

Unisex

Sustainability

Contains recycled materials

Buying Advice

Two people hike over a rocky trail carrying backpacks

Reviews
3 reviews with an average rating of 5.0 out of 5 stars

Ratings Snapshot

Product Rating

2 out of 2 (100%) reviewers recommend this product

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Average Customer Ratings

Overall Fit Rating

Runs SmallRuns Large

Ease of Use

Difficult to useVery easy to use
Chrispy
Athol ma
Rated 5.0 out of 5 stars

5 yrs of ownership

2 months ago

I’ve been on a few over nighters, the frantic seems to brush off any snags with ease. No signs of wear and tear. The mesh pockets still have plenty of elastic tension after stuffing them full many times. My base weight is 23lbs and it disperses the weight very well. I hiked mount Washington with a full pack and it was hardly noticeable. So handy to have all my snacks phone and water easily accessible.

Age:25–34
Weight:175–200 lbs.
Height:6'0"
Yes , I recommend this product

Overall Fit Rating

Runs SmallRuns Large

Ease of Use

Difficult to useVery easy to use
Helpful?
Bearded Fungian
Granville, Ohio
Rated 5.0 out of 5 stars

Great Ultralight Long Haul Comfort

9 months ago

Absolutely love the shoulder harness, feels like the pack is hugging me. Was worried about carrying 25 lbs load without a hip belt, but the ride and comfort were fantastic with no shoulder fatigue….

Age:45–54
Weight:125–150 lbs.
Height:5'8"
Yes , I recommend this product

Overall Fit Rating

Runs SmallRuns Large

Ease of Use

Difficult to useVery easy to use
Helpful?
Anonymous
Rated 5.0 out of 5 stars
4 weeks ago
Helpful?

Questions & Answers

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