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Ultra-Sil Stuff Sack

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Color: Forest Green

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Ultralight and slippery pack organization

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.


  • 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

Size Guide

  • 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: A lightweight down jacket with hood or food for a 2 day backpacking trip
  • 9 Liter: Most three-season sleeping bags, including synthetics
  • 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

Tech Specs

XXS-2.5L XS-4L S-6.5L M-9L L-15L XL-20L XXL-30L
DIMENSIONS 4 x 10 in 5 x 12 in 6.5 x 13 in 7 x 15 in 8.5 x 17 in 9.5 x 19 in 10.5 x 23 in
WEIGHT 0.5 oz 0.5 oz 0.6 oz 0.7 oz 1.0 oz 1.2 oz 1.4 oz


Best use?

Best for internal packing organization.


It is only water resistant. The seams are not tape sealed, and the top does not utilize a roll-top closure.

A good choice for a (lightweight) tent storage bag?

Yes. If you carry the poles separately (for instance, under the compression straps of your pack), you can pack the canopy in an Ultra-Sil Stuff Sack.