Black Diamond Mercury 55 Backpack

Article number: P-36400
Availability: In stock

A full-featured backpacking pack with ergoACTIV XP suspension, the Mercury 55 maximizes comfort on the trail with a cavernous interior for all the camp comforts.


Built for rough trails, big mileage and maximum comfort over the long haul, the Black Diamond Mercury 55 Backpack combines classic backpacking features with sleek, modern designs and unparalleled freedom of movement. Ideal for weekend trips from Olympic National Park to the Smoky Mountains, The Mercury 55 features our ergoACTIV XP suspension system that uses a custom, 3D pivoting hipbelt with urethane tendons, a men's-specific fit and SwingArmTM shoulder straps for increased stability and dynamic load transfer. The pack's front zippered panel gives you full access to the inside, while multiple pockets, dividers and straps help secure and organize your gear during extended trips.


  • ergoACTIV XP suspension with OpenAir™ backpanel and SwingArm shoulder straps
  • Top-loading with floating top pocket, plus front zippered access
  • Waterproof taping on top and bottom
  • Compartment divider, side and hipbelt pockets, front and internal organizer pockets
  • Retractable trekking pole/ice axe loop, sleeping pad straps, hydration compatible
  • Also available as women's-specific Onyx


Best Use: Backpacking

Frame Type: Internal Frame

Gear Capacity (L):M- 55 liter L- 57 liter

Gear Capacity (cu. in.): M - 3,356 cubic inches, L - 3,478 cubic inches

Weight: M - 4 lbs. 9 oz., L - 4 lbs. 11 oz.

Fits Torso: M - 17.5 - 20.5 inches, L - 19.5 - 23.5 inches

Fits Waist/Hips: M - 29 - 34 inches, L - 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: Unisex

Backpack Style: Lightweight

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