Durston Kakwa 40

The Durston Kakwa 40 is an ultralight thru-hiking pack designed by Dan Durston, with a roll-top main body measuring 36 L that extends to 51 L via its collar. It rides on a removable aluminum frame with load lifters and a padded hip belt with zippered pockets, and the body is built from Ultra 200X fabric — a UHMWPE laminate bonded to nylon. The medium size weighs 795 g, and at 15.6 g per liter it sits among the lighter framed thru-hiking packs. The feature set includes one front pocket, two side pockets, and hydration compatibility; there's no integrated rain cover, which is typical at this weight class. The presence of both a sternum strap and load lifters suggests the pack is built to handle real loads, not just stripped-down ultralight kits. It suits thru-hiking and multi-day treks where the hiker wants a framed pack with proper back support without giving up too much weight — the one-year warranty is standard for the category.