Review: Mountainsmith Zerk 40 Ultralight Backpack - The Big Outside

Review: Mountainsmith Zerk 40 Ultralight Backpack - The Big Outside

Outdoors blogger and former Backpacker magazine Northwest Editor and lead gear reviewer Michael Lanza reviews the Mountainsmith Zerk 40 ultralight backpack.

Review: Mountainsmith Zerk 40 Ultralight Backpack - The Big Outside

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Review: Mountainsmith Zerk 40 Ultralight Backpack - The Big Outside

Mountainsmith Zerk 40 Backpack Review

Review: Mountainsmith Zerk 40 Ultralight Backpack - The Big Outside

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