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Beast18 Ultralight Technical Backpack



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Beast18 Ultralight Technical Backpack




  • Product Description

    The Beast18 is an ultralight packable frame pack engineered for technical outdoor pursuits.

    Best For: Long distance carry and trails.
    Technical Specifications, CA Prop 65

In Depth

The Beast18 is an ultralight frame pack engineered for technical outdoor pursuits. A flexible frame suspension system provides support and torsion with movement, while still allowing the bag to pack down small for travel. This fully-featured alpine pack is built from Robic® fabric and reinforced with a UTS coating for weatherproofing and durability.
Backpack and packed down pouch with trekking poles and ice axe on white background

Ultralight frame pack featuring hydration sleeve, gear loops for alpine tools, and daisy chains for additional external storage. 1lb 5oz total weight, and built with Robic nylon and rugged YKK hardware.


Built-in steel frame suspension system moves with the body during activity. Adjustable hip belt and sternum strap distributes heavy loads evenly.


To pack, twist and fold the pack in half and secure in the included compression sack. To unpack, remove from compression sack and the spring steel frame instantly restores the shape of the pack.

Steel frame twisted into a figure 8

The Beast18 features an innovative spring steel frame, which allows for both structure and packability. The flexible frame suspension provides comfort and torsion with movement, for an agile fit that moves with you and distributes loads evenly. When not in use, simply twist and fold the frame, and secure into the compression sack. The spring steel frame bounces back into its original shape when released.
Man holding open backpack opening

The main compartment features an asymmetrical clamshell zipper, making it easy to access the larger items at the bottom of your pack. An oversized front compartment extends to the bottom of the pack, while a zippered pocket inside protects your smaller items. Safely store valuable items in the small interior pocket with keyloop.
Placing hydration resevoir in backpack

An internal hydration sleeve accommodates most 1-3 liter reservoirs, with hose routing features on both shoulder straps for a customized fit.
Man cinching down packable pouch

Easily twist, fold, and store the pack in the included compression sack for travel. Ultralight at just 1lb 5oz, the Beast18 makes it easy to take a fully capable alpine pack with you wherever you go.


18 liter capacity
Built from durable 210D Robic® nylon
Waterproof UTS coating (adds up to 30% strength over traditional PU coatings)
Flexible frame that moves with your body
Removable hip belt
Adjustable sternum strap
Dual compartment design with half clamshell zipper main
Hydration Compatible
Gear loops for hiking poles, ice axes, or tools
Hypalon reinforced external daisy chain
Oversized water bottle pockets
Two internal pockets and key loop for securing small items
Padded breathable mesh shoulder straps and back panel
Compression storage sack for travel
Patent(s) Pending

Volume: 18 liters
Weight: 1lb 5oz (595g)
Unpacked Dimensions: 10 x 20 x 6.5in (25.5 x 50.8 x 16.5cm)
Packed up Dimensions: 9 x 9 x 3.5in (22.9 x 22.9 x 8.9cm)


YKK® zippers and hardware
EVA foam padded back, shoulder straps, and hip belt
210D nylon Bonded thread with Bartack reinforced construction
UTS Coating: Adds up to 30% increased tear strength over traditional coatings

Outer Materials:
210D Robic® high tenacity nylon, UTS coated, DWR finish

Inner Materials::
100D Robic® high tenacity nylon, UTS coated, DWR finish

Califorina Prop 65 Warning Warning: This product can expose you to chemicals including DMF which is known to the State of California to cause cancer. For more information go to

Back view of woman wearing a backpack, standing on a mountain ridge
Woman in headlamp looking at backpack straps
Person wearing a backpack with two trekking poles attached to it

Beast 18 backpack on white background

Volume: 18 liters
Weight: 1lb 5oz (595g)
Unpacked Dimensions: 10 x 20 x 6.5in (25.5 x 50.8 x 16.5cm)
Packed up Dimensions: 9 x 9 x 3.5in (22.9 x 22.9 x 8.9cm)
Airline Compliance: Personal item
Beast 28 backpack on white background

Volume: 28 liters
Weight: 1lb 8oz (680g)
Unpacked Dimensions: 11 x 22 x 7in (27.9 x 55.9 x 17.8cm)
Packed up Dimensions: 9 x 9 x 3.5in (22.9 x 22.9 x 8.9cm)
Airline Compliance: Personal item
View Beast28 >