Zpacks Stuff Sack

No, it is water-resistant. While the Dyneema fabric itself is waterproof and the seams are taped, the draw cord closure allows water to enter if the bag is submerged or exposed to heavy, direct rain. It is best used for keeping gear organized inside your pack rather than as a dry bag for water sports.

Yes. The Dyneema Composite Fabric used for this sack is semi-transparent, which makes it easy to identify your gear at a glance without needing to dump everything out.

This size is ideal for small, loose items that tend to get lost in a pack. It works well for toiletries, charging cables and power banks, headlamps, or a pair of lightweight socks.

Dyneema is exceptionally strong for its weight and resists tearing well. However, it is thin, so you should avoid stuffing it with sharp, pointed objects that could puncture the fabric over time.

The draw cord is designed for quick access and keeps the opening cinched tight. It is secure enough to keep items contained inside your backpack, though it is not intended to be a hermetic seal.