The Arc'teryx Altra 75 pack is built for long-range comfort and big-load stability with a hybrid design that unites a supportive suspension with lightweight materials and breathable comfort.

• Highly breathable AC2 MonoFrame system creates a direct link between spine, suspension and bag
• Rotating Load Transfer Disc allows the hipbelt to pivot, following your natural movements for agility and stability
• Anatomically-shaped shoulder straps feature a core layer of perforated, air-permeable EV® 50 foam lined with breathable Spacermesh for next-to-the-skin comfort
• Injection-molded GridLock shoulder strap adjustment is laminated to the MonoFrame, allowing personalized adjustments to be made both vertically and horizontally
• Thermoformed, triple-density hipbelt promotes airflow and evaporative cooling
• Aeroform back panel features small peaks and valleys with resilient monofilament nylon mesh that provides airflow next to your body for cooling comfort
• Composed of EVA foam, Kydex plastic and twin removable aluminum stays, the suspension is bonded directly to the pack body for comfort and stability
• Removable and expandable top lid has 2 zippered compartments and a map pocket
• Extendable collar with drawcord adds capacity to the main compartment for large loads
• Top-loading pack body also features a full-length, inverted U-shaped zipper, allowing quick panel-loading access to the main compartment
• Hydration-compatible design features reservoir sleeve with a HydroPort and hose clip for drinking tube (reservoir sold separately)
• Kangaroo pocket on front of pack is perfect for stashing raingear or other items that you may need to access quickly
• 2 stretch-mesh side pockets with elastic drawcords secure water bottles
• 4 external compression straps let you cinch down your load for jostle-free carrying; padded compression wings and micro daisy chains allow additional storage configurations
• Silicone- and polyurethane-coated pack body is made of 100-denier Invista HD Mini Ripstop nylon and 210-denier Ripstorm nylon
• Pack base is made of burly, 420-denier Invista HD plain weave nylon
• Arc'teryx Altra 75 pack features a padded bottom, Hypalon trim and reinforced high-wear areas to bolster durability