The Berghaus Bioflex Light 35 features a lighter version of the standard Bioflex system to allow improved freedom of movement via a rotating hipbelt. The back system also has an adjustable back length, which allows the shoulder straps to move up or down on a pair of alloy bars. I did find adjusting the back length a little messy compared to other designs, but once adjusted the extra movement in the hips is a real advantage, particularly for scrambling. The hipbelt is very wide, which makes this sack ideal for carrying heavier gear, such as a full load of overnight backpacking kit. To store that gear you get a single main compartment with a short snow-lock extension and a lid that provides good coverage of the main opening. The lid has a large external pocket that’s ideal for maps or guidebooks. There are mesh wand pockets on the sides and a pair of compression straps, but these don’t get quick-release buckles. There’s a stretch stash pocket on the front and a bungee but no other external pocketing, which some may feel is too limiting. The main drawback of the Berghaus Bioflex Light 35 is that it is quite heavy at 1447g.
Capacity 35 litres
Internal compartments 1
External zipped pockets 1
Wand pockets yes
Rain cover yes
Back lengths adjustable (men’s)
Women’s back lengths adjustable (women’s)
The Berghaus Bioflex Light 35 has a unique back system, which improves comfort and freedom of movement; but the drawback is the extra weight of the pack, which makes it best suited to use with full loads rather than lighter day trips. It won Trail’s ‘Best in Test’ accolade.
Review by Graham Thompson
First published in Trail magazine March 2013