Why We Chose The Sierra Designs Flex Capacitor 40L – 60L: Versatile, clever design, lightweight
Sierra Designs make kit that is different. Most of the products across their line have something that’s fresh or unique about them, and we like that.
This, the Sierra Designs Flex Capacitor 40L-60L, is a great example. The designer behind it is none other than Andrew Skurka. In case you’ve not heard of him, he’s basically King of the Backpackers over in the States. It’s a pack that, as its name suggests, flexes. Thanks to its six compression straps and a big gusset across the front, what you have here is a carrier that can switch from a 40L to a 60L and cater for all the sizes in-between as well. There are a bunch of other useful features too.
Who Is The Sierra Designs Flex Capacitor For?
At 1.2kg, this fits into the lightweight category but only just. There are certainly much lighter packs out there. It’s still an option that’s well worth considering for any backpackers who are conscious of their gramme count though. You can see that it’s been made with long trails in mind, one like the Pacific Crest Trail and Appalachian Trail in particular, where the overall pack capacity is going to expand and shrink constantly.
The back system here is simple but supportive. It involves one lightweight Y-shaped frame that forks at the top, channeling weight down from the shoulders to the waist. A thick padded lumbar support and then two pads also up on the shoulder pads, keep the pack raised off your spine while also allowing a good amount of airflow as well.
It’s certainly durable enough to withstand the demands of life on the trail.”
Like most backpacks this comes in two different back lengths: S/M and M/L. Unlike most options out there, however, you also get a choice of hipbelt size as well, with four different sizes altogether. It’s interchangeable so you could potentially even swap sizes if you find your waist drastically changes for some reason. They say this happens on the trail but we’re yet to see evidence of that!