We have these in three sizes. The numeric size doesn’t refer to the carrying capacity of the pack but to the height of the user. In the chart below, you will see the recommended back length and height of the user for each size. This code is more what you'd call "guidelines" than actual rules, as people have different body proportions and personal preferences.

Size | Recommended back length | Recommended user height

2 | 38–43 cm (15"–16.9") | 160–173 cm (5' 3"–5' 8")

3 | 43–48 cm (16.9"–18.9") | 170–183 cm (5' 7"–6')

4 | 48–54 cm (18.9"–21.3") | 183–198 cm (6'–6' 6")

• External measurements c. 88 x 57 x 33 cm (34.5" x 22.5" x 13")
• Capacity: Roughly 110 liters (6,713 cu in.)
• Weight 3.35 kg (7.4 lbs)
• The upper main compartment is covered by a large flap. The straps of the flap are looong, so you can overpack lots of stuff between the flap and the pack. In this FA version, the main compartment can also be opened from the front, which enables you to access the lowermost gear inside very easily. On the outside, there is webbing where you can attach more stuff.
• Possibility to attach a helmet to the pack.
• Inside, there is a hydration bladder pouch plus two straps for fastening gear.
• An internal divider between the upper and lower compartments, which can be opened or closed with a drawcord.
• Lower main compartment, accessed by a zipper and secured by two compression straps.
• A small zippered pouch inside and a larger one outside the main flap, capacity c. 5 liters (305 cu in.). Furthermore, there is webbing on the outside where you can attach more gear plus a hook & loop slot for patches.
• Zippered side pouches, capacity 10 liters (610 cu in.). They can be removed and merged together to form a daypack. The pouches have attachment points for more gear.
• Padded, adjustable shoulder straps and a chest strap with a quick-release buckle.
• Stiff, well-padded waist belt with a sturdy quick-release Bergbuckle.

Materials

All materials used are high-quality polyester and nylon webbing, YKK zippers, and Berghaus buckles.