Description
The Ursack S29.3 AllWhite is the same soft-sided approach to bear-resistant food storage: a 10.65 L bag made from UHMWPE (Spectra) fabric, IGBC-certified under certificate no. 3738, weighing 216 g — essentially matching a hard canister's capacity at a fraction of the weight. Ursack rates the volume at roughly 37 meals' worth of food for one person, useful for estimating resupply intervals on longer stretches without a town stop.
Like other soft bear bags, it protects contents through cut- and puncture-resistant fabric rather than rigid walls, which means it needs to be cinched shut and tied off to a solid anchor point overnight rather than simply left standing — a bear can't chew or claw through the fabric, but an untethered bag could still be carried away. That single extra step at camp is the main trade-off against a hard canister's set-it-and-forget-it use.
It's aimed at the same audience as other Ursack models: thru-hikers and long-distance backpackers on trails that accept certified soft-sided storage, where the weight saved over a hard canister adds up meaningfully across a multi-week itinerary.