Ultra-Sil Stuff Sack

Sea to Summit
$14.95 $14.95
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Sea to Summit Ultra-Sil Stuff Sack

A variety of sizes and colors for your packing needs, 

The Ultra-Sil™ Stuff Sack is an ultralight but durable solution using a 30D siliconized CORDURA® fabric. Ideal for organizing gear in your pack or bag, these stuff sacks incorporate a reinforced pull handle on the base, a durable pull tab at the top and are available in several great colors. The slippery exterior means they slide down into tight spaces easily.

Best Use

  • Internal pack organization: use multiple sizes/colors to create a modular packing system.


  • Your scale will hardly notice the difference when you start using these.

What this bag could hold

  • 2.5 Liter: If you’re travelling, this size will hold essentials such as chargers, headphones and phone accessories
  • 4 Liter: Immediate need’ three-season clothes: a beanie, gloves, a light shell
  • 6.5 Liter: Most three-season sleeping bags, including synthetics
  • 9 Liter: A lightweight down jacket with hood or food for a 2 day backpacking trip
  • 15 Liter: A tent canopy (much better than the skimpy-tight stuff sack supplied with the tent)
  • 20 Liter: A multi-day food bag / nighttime critter bag (careful around sharp branches)
  • 30 Liter: A double sleeping bag or a couple of really warm down jackets


  • Made of 30D Diamond RipStop Siliconized CORDURA®
  • The fabric is impregnated with silicone to make it waterproof to a hydrostatic head of 2000mm
  • The fabric has a slippery finish for easy packing
  • Reinforced pull handle on the 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