The Berghaus Bioflex Light 50 tips the scales at the same weight as 2012’s £140 Bioflex 45, so you’re getting more pack for the same weight and less cash this year. However at 1630g this pack is still the heaviest in our test. The Bioflex back system comprises of a rotating hipbelt, so the body of the pack stays still when your hips raise and lower when scrambling, and I like this system. The hipbelt on this new version is more comfortable too, as it is softer around the lower back. The shoulder harness can be raised or lowered to allow the pack to fit different back lengths, but it would probably be lighter if it did not have that extra back length adjustment. But on the hill this is a comfortable and stable option. The body of the pack has a single compartment and lid closure, but there is also a front zipped opening with a zip-out panel inside so that the front opening can be used as an external pocket. Like most sacks in our test you get wand pockets and compression straps on the sides, but on this pack the compression straps are attached to an alloy rod to create more even compression. This works well, but again I wonder if many would prefer to save a little weight by removing these bars, which sadly isn’t possible without breaking them and stitching the compression straps to the pack.
Capacity 50 litres
Internal compartments 1
External zipped pockets 3
Wand pockets yes
Compression straps yes
Men’s (unisex) back length adjustable
Women’s back length adjustable
The rotating hipbelt sets the Berghaus Bioflex Light 50 pack apart from the rest in our test, and it does compensate for the higher-than-average weight of the sack, but it would be even better if lighter. The price is great for what you get. The pack won Trail magazine’s ‘BestinTest’ accolade.
Review by Graham Thompson
First published in Trail magazine September 2013