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Sea to Summit Ultra-Sil® Stuff Sack

Item M-609
Our Ultra-Sil® Stuff Sacks are super strong and lightweight. We use ultralight ripstop Cordura fabric in a range of colors.

  • Made of 30D Diamond Siliconized Cordura®
  • The fabric is impregnated with silicone to make it waterproof to a hydrostatic head of 2000mm
  • Fabric has a slippery finish for easy packing
  • Reinforced pull handle on bottom
  • Uses the smallest possible cord and cord lock for top closure
  • Bar tack reinforced in all stress points
  • All seams are double stitched for extra strength
  • Note: seams are not tape-sealed; therefore this product is not waterproof - only water resistant

Availability: In stock


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Sea to Summit



  • Length: 4 in/
  • Height/Depth: 10 in/
  • Weight: .4 oz/11g
  • Volume: 2.5 liter / 130 cu in
  • Length: 5 in/
  • Height/Depth: 12 in/
  • Weight: .5 oz/14g
  • Volume: 4 liter / 240 cu in
  • Length: 6.5 in/
  • Height/Depth: 13 in/
  • Weight: .6 oz/17g
  • Volume: 6.5 liter / 430 cu in
  • Length: 7 in/
  • Height/Depth: 15 in/
  • Weight: .7 oz/20g
  • Volume: 9 liter / 580 cu in
  • Length: 8.5 in/
  • Height/Depth: 17 in/
  • Weight: 1 oz/28g
  • Volume: 15 liter / 960 cu in
  • Length: 9.5 in/
  • Height/Depth: 19 in/
  • Weight: 1.2 oz/34g
  • Volume: 20 liter / 1400 cu in

Additional Info

Additional Info

Dimensions No


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Lifetime Guarantee

All of our handmade packs and bags are built to last in Duluth, Minnesota, USA. Our factory, where we have been building our products since 1911, is home to an extremely talented group of sewers, riveters, and leather craftspeople. Each piece of Duluth Pack gear is painstakingly built by hand with the attention and detail that only a true artisan can provide. We stand behind our work and are proud to offer a lifetime warranty covering all craftsmanship and hardware we use in the construction of our products. Craftsmanship includes our sewing and riveting. Hardware includes all zippers, buckles, D-rings, snaps, and any other parts utilized in the manufacturing of our bags. If at anytime during the life of your Duluth Pack product you have problems in these areas, return the product and it will be repaired free of charge. If the product cannot be repaired due to a defect in craftsmanship or faulty hardware, we will be happy to replace the item at Duluth Pack’s discretion. While your Duluth Pack item is designed to provide you with many years of use, Duluth Pack is not responsible for common wear and tear or misuse of your product and is therefore not covered by our warranty. Of course, damages not covered under warranty can usually be repaired at a minimal cost. We sincerely value your patronage and will always do our absolute best to go the extra mile to ensure that you are happy with every Duluth Pack purchase.