Gossamer Gear Kumo

The Kumo is a 36-liter frameless pack from Gossamer Gear built around 70D Robic ripstop nylon, weighing 377 g in its smallest listed size (S). At 10.5 g per liter it's among the lighter packs in the lineup relative to capacity, helped by a removable stay, an adjustable back length, and a padded, removable hip belt that keeps the fit dialed without a fixed frame's weight. A chest strap and load lifters give some control over how the load sits, which matters more on a frameless pack than a framed one. Notably, this listing includes a rain cover and hydration bladder as standard, plus a daisy chain for lashing extra gear outside — features not every ultralight pack bundles in. The roll-top closure compresses as the pack empties over a trip. Some spec details, such as pocket configuration and exact fabric denier of the base, aren't specified here, so check current product materials if they matter for your trip. It suits thru-hikers running a light base weight who still want a hip belt and adjustable fit.