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Gregory - Optic 48

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Stock #: H37JZ-
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Achieving fluid motion takes more than counting ounces. The ultralight Optic 48 combines weight-saving design with exceptional fit and load management to give you a low base pack weight along with mileage-crushing efficiency. Comfortable carry and thoughtful trail features keep your head in the game so you stay ahead of your thru-hiking itinerary.


  • 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


  • Frame Type: Internal Frame
  • Ultralight: Yes
  • Gear Capacity (L): S: 45 liters, M: 48 liters, L: 51 liters
  • Gear Capacity (cu. in.): S: 2,746 cubic inches, M: 2,929 cubic inches, L: 3,112 cubic inches
  • Weight: S: 2.4 pounds, M: 2.5 pounds, L: 2.6 pounds
  • Fits Torso: S: 16-18 inches, M: 18-20 inches, L: 20-22 inches
  • Fits Waist/Hips: S: 27-46 inches, M: 28-48 inches, L: 30-53 inches
  • Material(s) Body: 100-denier/210-denier HD tenacity nylon; lining: 135-denier HD polyester
  • Frame Material: Aluminum
  • Number of Stays: Perimeter wire
  • Hydration Compatible: Yes
  • Pack Access: Top
  • Number of Exterior Pockets 3 + main compartment
  • Raincover Included: Yes
  • Hipbelt Pockets: Yes
  • Dimensions: S: 26 x 12.5 x 10.5 inches, M: 28 x 12.5 x 11.5 inches, L: 30 x 12.5 x 12 inches

Additional Information

Year Spring 2018
Intended Use Hiking/Backpacking

Product Videos

  • Gregory Optic Pack