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  • Patent-pending ergoACTIV hipbelt, breathable back panel and soft, 3D mesh lining on hipbelt and shoulder straps provide top-notch support and comfort
  • SwingArm™ shoulder straps move in concert with a hiker�s stride or a climber�s reach by sliding through the bottom of the pack with a low-friction cable and housing
  • Shoulder straps are linked to the other by the cable which helps maintain an even, balanced load across the shoulders
  • An ideal blend of volume, comfort and mobility lets you bring everything you need without slowing you down or limiting your range of motion
  • Top-loading pack body features a floating lid to accommodate large or small loads; giant U-shape front-panel zipper offers easy access to main compartment
  • Hydration compatibility lets you add a reservoir of your choice (reservoir sold separately)
  • Hipbelt stash pocket, side stretch pockets and large zippered front pocket offer plenty of storage for water bottles, snacks and other essentials
  • Waterproof taping on the top and bottom seams helps keep contents dry
  • The Black Diamond Mercury 55 pack features retractable tool loops that allow ice axes or trekking poles to be lashed to the outside of the pack


View all Black Diamond Backpacking Packs

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Best Use Backpacking
Frame Type Internal Frame
Gear Capacity (L) 55 / 57 liter
Gear Capacity (cu. in.) 3,356 / 3,478 cubic inches
Weight 4 lbs. 9 oz. / 4 lbs. 11 oz.
Weight - Metric 2.1 / 2.14 kilograms
Fits Torso 17.5 - 20.5 / 19.5 - 23.5 inches
Fits Waist/Hips 29 - 34 / 34 - 39 inches
Material(s) Polyester/nylon
Frame Material HDPE framesheet/6061-series aluminum
Number of Stays 6mm peripheral hoop/20mm center stay
Suspended Mesh Back Panel No
Pack Access Top / front
Number of Exterior Pockets 5 + main compartment
Sleeping Bag Compartment Yes
Gender Men's
Backpack Style Lightweight
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