A stuff sack is superlight and very convenient to use, but because of the drawstring closure it is not completely waterproof. The drawstring system features a smooth cord lock, a loop made from a woven label on the opposite side, and a string puller. Together, these elements make opening, closing, and handling the stuff sack quick and effortless.
This storage solution is recommended when using a backpack liner that already provides waterproof protection or when complete waterproofness is simply not required. For most hiking trips, however, the drawstring closure provides more than sufficient protection against moisture. When the drawstring is tightened properly, the opening becomes almost as water-resistant as a roll-top dry bag.
Dyneema Composite Fabric offers a significant advantage over commonly used Sil/PU-coated nylon thanks to the ease of seam taping. In addition, the laminate does not absorb water because the ultra-strong UHMWPE fibers are laminated between two polyester films. By comparison, polyamide (nylon) woven fabrics can absorb up to 8% of their weight in water, meaning they may require drying after use. The polyester film on both sides also allows the use of pressure-sensitive adhesive (PSA) seam tape, which provides a more durable bond than the heat-activated seam taping commonly used on coated fabrics.
The product photos show the following items inside the stuff sack: Darn Tough Hiker Quater Midweight Socks, Zpacks Vertice Rain Jacket, Sea to Summit Reactor Compact Plus+ Liner, Enlightened Equipment Rain Wrap, hubieul Alpha Direct Hoodie.












