Gregory Z40 Backpack - Unisex



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An easy-carrying, highly breathable pack for minimalist overnight trips or gear-intensive days. Redesigned with a sleeker look and fewer seams that make it 15% lighter than older models. It keeps the breathable body contact points and a suspension that auto-balances flexibility and stiffness as you add or remove weight.

  • Made from a combination of nylon and stretch woven nylon, reinforced with polyester and tough nylon taffeta.
  • Cross-flo Suspension provides cooling airflow across your back without sacrificing load transfer.
  • Trampoline back panel automatically tensions as you add weight.
  • Lightweight wire X-frame transfers load directly to lumbar bad and waistbelt.
  • Shoulder yoke is integrated into X-frame to auto-balance flexibility and stiffness as the load increases.
  • Die-cut foam on harness and waist belt for breathability.
  • 2 exterior stretch water bottle pockets.
  • Front bucket pocket with a smaller zippered pocket.
  • Dual quick-access waist belt pockets.
  • U-shape zippered front access to main compartment.
  • Trekking pole loops let you attach them quickly.
  • Designed for loads up to 16kg.

Tech specs

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Ideal for
  • Day hiking
  • Backpacking
Main fabric 210-denier nylon
Secondary fabric 100-denier nylon

The location of all access points into the main compartment of the pack.

  • Top
  • Side
Hipbelt Padded
Lid type

Some pack lids can be adjusted to compensate for overloaded packs, or even removed, and some removeable lids have tuck-away hipbelts that allow youto use them as a waistpack.

  • 38L (small)
  • 40L (medium)
  • 42L (large)
Torso length

Torso length is measured from the most prominent vertebrae at the back of your neck (top of shoulders) to the spot on your lower spine that lines up with the top of your hipbone.

  • 41-46cm (small)
  • 46-51cm (medium)
  • 51-56cm (large)
Ventilated back panel Yes
Adjustable shoulder harness

An adjustable harness lets you change the height of the shoulder straps to fit your specific back length.

Dynamic suspension

The hipbelt and/or shoulder straps of the pack are designed to move, pivot or flex to follow your body’s movements. Each brand uses their own technology.

Carry-on sized

Size restrictions vary among airlines. Just to be sure, check with your carrier for their specific restrictions.

Made in Philippines