Black Diamond Onyx 55 Backpack


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Made to fit the female torso, the Black Diamond Onyx 55 Backpack is the perfect size for a weekend on the trail. With 3D pivoting waist belt, ergoACTIV XP suspension, and Swingarm shoulder straps, this top-loading pack is made for maximum comfort and stability on uneven ground. Features include sleeping pad straps, an ice axe/trekking pole loop and hydration compatibility. A floating interior pocket gives maximum packing versatility while top-loading and zippered front access allow you to reach inside without having to pull everything out on the trail. Set yourself up properly for the long haul with the Black Diamond Onyx 55 Backpack.


  • Women's specific fit
  • Material: 400 denier polyester twill
  • Suspension: ergoACTIV XP™ with Swingarm™ shoulder straps
  • Waist belt: 3D pivoting
  • Hydration compatible
  • Top loading and zippered front access
  • Floating interior, exterior, and hip-belt pockets
  • Ice axe/trekking pole loop and sleeping pad straps
  • Volume: 55 liters, 3356 cu in (medium), 57 liters, 3478 cu in (large)
  • Weight: 2060 g, 4 lb 8 oz (medium), 2100 g, 4 lb 9 oz

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Available sizes, while supplies last, include size small and size medium: s, m.

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