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Gregory - Optic 58

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Stock #: H37KZ-
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Longer distances and winter temperatures require extra room, and the Optic 58 gives you that additional capacity without compromising your ultralight priorities. Proper load management, moisture-wicking ventilation, and intelligent features keep you comfortable and mentally balanced from sea level to the High Sierra, because efficient trail travel involves more than a weight claim.


  • AeroSpan suspension with EVAP moisture wicking shallow-depth ventilated back panel 
  • Ventilated, dual-density FocusForm shoulder harness and extra supportive hip belts with targeted comfort zones
  • Leaf-Spring Lumbar pad for comfortable, energy-saving load transfer
  • Ultra-light 7001 aluminum perimeter frame with Anti-barreling support
  • Included custom fitted rain cover stows in the top pocket for quick access in unexpected showers
  • Removable top zippered pocket to shed ounces and swap-in included ultra-light weather flap to stay protected (stows in top pocket)
  • Sunglass QuickStow system on shoulder harness for quick, secure and scratch-free access to your shades without taking the pack off
  • Quick access on-the-go water bottle stow access on both the right and Left sides
  • Oversized, durable front stretch mesh pocket for quick access organization
  • Dual zippered hip belt pockets provide secure, easy to access storage
  • Dual stretch mesh side pockets with Large capacity for bottles, camp sandals, trekking poles
  • Dual adjustable attachment loops and upper shock locks for trekking poles or ice axes
  • Ultra-light V-Compression system on side and bottom of bags
  • Lower side compression pass-through on side pocket for over/under option
  • Gear attachment points on top pocket and main body


  • Gear Capacity (L): SM: 55, MD: 58, LG: 61
  • Gear Capacity (cu. in.): SM: 3356, MD: 3539, LG: 3722
  • Product Dimension: SM: 26 x 12.5 x 11, MD: 28 x 12.5 x 12, LG: 30 x 12.5 x 12.5
  • Weight (lbs): SM: 2.40, MD: 2.52, LG: 2.70
  • Rain Cover Weight (lbs): SM: .20, MD: .21, LG: .21
  • Stripped Weight (lbs): SM: 2.29, MD: 2.42, LG: 2.57
  • Material(s): 100% Nylon
  • Sleeping Bag Compartmen:t No
  • Internal Frame: Yes
  • Frame Materials: Aluminum
  • Frame Style: Perimeter wire
  • Max carry weight (lbs): 35
  • Suspension Technology: Aerospan
  • Hydration Compatible: Yes
  • Hydration Resevoir Included: No
  • Number of External Pockets: 3
  • Compartment Access: Top Closure
  • Type: Drawcord
  • Removable Daypack: No

Additional Information

Year Spring 2018
Intended Use Hiking/Backpacking

Product Videos

  • Gregory Optic Pack