The Sierra Designs Flex Capacitor 40–60L in Butterscotch offers an adjustable volume for backpacking. Expanding horizontal gussets add space for longer trips, while the pack can be compressed when carrying less equipment.
The Y-Flex suspension gives the bag its support structure. For this M/L version, Twist lists a weight of 1.4kg and a torso range of 46–53cm, with nylon honeycomb and Oxford fabrics forming the main construction.
A U-shaped top zip provides access to the main compartment. Shoulder-strap hydration pockets, mesh side pockets and zipped hip-belt pockets keep smaller items separate, while the hydration sleeve can be removed and used as a summit sack.
The listed M/L dimensions are 70 x 22 x 32cm. A rain cover is available separately. The useful choice is whether the adjustable volume and harness suit your equipment and body: check the bag with a realistic load, and compare access to the items you expect to use along the route.
Explore Sierra Designs Flex Capacitor 40L-60L Rucksack – M/L – Butterscotch at Twist Distribution.
Product information and image: Twist Distribution.
