Best Climbing Backpacks - δ (Delta) Pack

As one of the best climbing backpacks on the market, our δ (Delta) Pack will not disappoint those that are on a light and fast climbing mission or that just want a light and flexible climbing pack. With a 35L capacity, it has just enough room for a multi-day assault on your project climb, but easily and effectively compresses down for smaller day trips. The δ Pack uses a hip hugging 1.5" webbing hip belt that cradles the hips and pulls the pack into your lumbar region, increasing load stability, without interfering with your climbing harness. The δ Pack also includes means to attach/detach our Crampon Pouch or basic webbing belts to secure crampons, our exclusive Hybrid Ice Axe Loops to attach any mountaineering ice axe or climbing tools, and reinforced back handle and Daisy Chain Handle. Other ultralight backpacks do not contain so many climbing specific features, and that’s why Figure Four's δ (Delta) Pack is one of the best climbing backpacks available today. With the δ Pack you can focus on the route and surroundings rather than your pack.
Check out Figure Four Pack reviews at Trailspace.com Check out Gripped's Pack review (Alexandropoulos, Gus. 'What's New for Ice.' Gripped. Dec-Jan 2012)

Sizing info can be found here, including where to measure.

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Solution Graphics

Scroll over picture to show features and browse tabs at bottom of page for more information on one of the best climbing backpacks
   
Figure Four Delta Pack - Best Climbing Backpacks Figure Four Delta Pack - Ultralight Backpacks
Crampon attachment Hybrid Ice Axe loop Removable lid with dual sided entry into main compartment Picket pockets Reinforced daisy chain User adjustable straps with multiple compression systems Reinforced daisy chain/handle Removable gear sling loops (sold separately) Contoured sides provide carrying stability and free movement Dual-pull hip-belt provides carrying stability Reinforced handle
 
  • F4 Difference
  • Features
  • Durability
  • Lightweight
  • Specs
  • Accessories

Torso
Spine

F4 Delta Pack Fit - Best Climbing Backpacks

Comparison of the anatomical fit between the δ (Delta) Pack (shown in gray/black) and other backpacks (shown in red)


Some other packs do not focus on pattern contours to mimic anatomic features and can leave a large space between the pack and the lumbar region when the pack is full. Pack frames can reduce this space (i.e. aluminum stays), but limit mobility while climbing. However, the δ (Delta) Pack is engineered for fit and mobility by utilizing anatomically cut side panels and contoured seams near the bottom of the pack to give it an ultra-close fit and not obstruct your gait. The side panels have a neutral profile that mimics the curvature of the back of a standing person. The Result: improved upright mobility without hindering movement while climbing in steep terrain or down climbing. This makes this ultralight backpack one of the best climbing backpacks.

When other pack's hip belt is removed, the user generally is left with a 1 inch webbing belt with one anchor point to their body. This does not center the pack well or prevent pack movement. However, the δ (Delta) Pack uses a hip cradling 1.5 inch webbing hip belt with a side-pull tightening system that further snugs the load into your lumbar region by providing extra anchor points to your body. This is facilitated with a highly flexible 0.035 inch HDPE sheet that allows free movement and centers the pack well, preventing any side-to-side and up-and-down movement.

Furthermore, the δ (Delta) Pack shoulder straps are contoured and have not too much, not too little, padding. All of this provides a comfortable, yet highly technical fit at an ultralight backpacks weight.


  • See F4 Difference Tab for features that improve fit and comfort
  • Removable 0.035 inch HDPE sheet adds little weight but reduces discomfort from awkwardly shaped items
  • Removable small pad
  • 2 picket pockets located on the side
  • User adjustable strap system with multiple compression systems
  • Removable gear sling loops for shoulder strap (sold separately)
  • Removable Crampon Pouch (sold separately)
  • Hybrid Ice Axe Loops secure both ice axes and modern ice tools
  • Lid with two-sided entry into main compartment
  • Reinforced handle
  • Reinforced Daisy Chain Handle triples as a haul loop, standard daisy chain, and handle
  • Rope strap
  • Hydration bladder compatible
  • Use of durable materials
  • Reinforced daisy chain and handle can be used for 2-point haul system
  • Minimalist design
  • Modular design where additional features can be added
    • Gear sling loops for shoulder straps (sold separately)
    • Crampon bag (sold separately) or straps can be attached to Crampon Panel
    • Easily removable lid and removable front lid connection straps/buckles

 

Small Pack
Torso range: < 18.75 inches
Waist Size: up to 42.5 inches
Volume: 35L
Weight: 2lbs 5.5oz - weight includes pack (25.5 oz), HDPE sheet (3.1 oz), pad (0.95 oz), lid (4.1 oz), side compression straps (2.2 oz), removable lid closure straps (0.8 oz), and crampon straps (1 oz)

Large Pack
Torso range: > 18.25 inches
Waist Size: up to 42.5 inches
Volume: 35L
Weight: 2lbs 6.5oz - weight includes pack (26.3 oz), HDPE sheet (3.1 oz), pad (1.05 oz), lid (4.1 oz), side compression straps (2.2 oz), removable lid closure straps (0.8 oz), and crampon straps (1 oz)

Pack component weight specs

Materials:
X-Pac fabrics
330D Cordura®
200D Oxford cloth for interior frame pocket
70D Silicon coated nylon extension
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