How to Choose a Backpack
Mountainsmith Zerk 40 Pack
$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.
This purchase pays for membership!
$22
10% Reward
on this and every eligible full-price item*
+
$30
Bonus Card
valid for 30 days after joining*
=
$52
Value
Start earning when you buy a $30 lifetime membership.
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- 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| 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 |
