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Ultra-Sil Dry Sack

Color: Grey

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Pack organization and water resistance all in one





Yes, in situations where the dry bag will not be submerged

The Ultra-Sil Dry Sack won the sought-after Backpacker Editors' Choice award in 2006 and remains the ideal dry sack for backpacking and travel. Made with lightweight, waterproof 30D Ultra-Sil fabric featuring CORDURA® yarns, it's the perfect choice to organize your gear inside your backpack or duffle like a pro. The semi-translucent fabric makes it’s easy to see what’s in each dry bag. Other features include a non-wicking hypalon roll-top closure, a round base for ease of packing and taped seams to keep moisture out. An excellent choice for lightweight backpacking, cycle touring and travel.


  • Recognized by Backpacker Magazine as the perfect dry storage solution for gear carried inside a pack
  • 30D siliconized high-tenacity CORDURA® Nylon fabric for extra strength, durability and a smooth finish for easy packing
  • Waterproof, reinforced seams - double stitched and tape sealed
  • Waterproof hypalon roll-top closure does not wick moisture
  • Reinforced stitching for greater seam strength on all stress points
  • Avoid sharp or hard-edged objects and abrasive surfaces
  • Super compact and ultra-lightweight
  • This product is not intended for boating or marine use

Tech Specs

  • BEST USE Backpacking, Hiking, Bike Packing & Travel
  • CLOSURE Waterproof durable roll-top closure
  • MATERIAL(S) 30 Denier Ultra-Sil Cordura® nylon
  • MEASUREMENT Length - measured with roll-top closure openVolume - measured with closure rolled 3 times
  • REPAIR BUCKLE SIZE 5/8in | 15mm (2-Pin)
  • SHAPE Cylindrical with an ideal height-to-width ratio for easy packing
  • WATERPROOF Perfectly adequate for dry storage inside a backpack, bike bag or duffle

Size Guide


Suitable for paddle sports?  

No. Featherweight fabrics are not appropriate for the sharp or abrasive elements in watersports. We recommend Lightweight Dry Sacks for general paddle use.


The body of the dry sack is more than adequately waterproof (2000+ mm hydrostatic head) for the intended use (storage inside a backpack or duffle).

Worth their weight and cost? 

Once you've experienced modular packing with ultralight, easy to pack, translucent dry bags, you’ll wonder how you ever lived without them.