Achieving fluid motion takes more than counting ounces. The ultralight Optic 48 combines weight-saving design with an 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.

• 100% nylon
• AeroSpan suspension with EVAP moisture-wicking, shallow-depth ventilated back panelVentilated, 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 a large capacity for bottles, camp sandals, and 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: 45L
• MD: 48L
• LG: 51L
• Product Dimension (h x w x d):
• SM: 26 x 12.5 x 10.5"
• MD: 28 x 12.5 x 11.5"
• LG: 30 x 12.5 x 12"
• Weight:
• SM: 2.39 lbs.
• MD: 2.47 lbs.
• LG: 2.62 lbs.
• Spot clean
• Imported