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Ultra-Sil Duffle Bag

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Ultra-Sil Duffle Bag

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Our lightest and most packable duffle bag+ View tech specs
  • Size
  • ColorPacific Blue

MATERIAL(S): Ultra-Sil fabric

CAPACITY: 40 liters

DIMENSIONS: 22 x 10 x 11 inches

WEIGHT: 2.8 oz / 80g

Shipping & Returns

Our warehouse is actively shipping orders from 8am to 1pm MST Monday through Friday. Most orders ship in one business day, but the transit time can take up to 7 days, depending on your distance from Boulder, Colorado.

2nd Day and Next Day Air orders will ship same day if placed by 1pm MST, Monday-Friday (except holidays).

All orders are eligible for fast and easy returns within 60 days of purchase.

For more details, please check out our Help Center

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40 liter / pacific blue || Ultra-Sil Duffle Bag
Ultra-Sil Duffle Bag


The Ultra-Sil Duffle Bag is the ultimate in lightweight packable duffle bag, which can fold to the size of a tennis ball. Made from strong and durable 30D siliconized CORDURA® fabric, it also has an incredible 40L capacity and is strong enough to carry heavy loads. The perfect bag for airline carry-on, impromptu excursions, weekends away or just going to the gym, it's also compact and super light, making it an obvious choice as a spare bag on any trip.


  • Ultra-Sil 30D siliconized CORDURA® fabric for strength and durability
  • Bar tacked and reinforced stitching at key stress points
  • Packs into an attached stuff sack that includes a handy carabiner
  • 2420 cu. / 40 Liter in volume capacity and strong enough to go the distance
  • Durable zipper



Tech specs

  • Best Use
    Gym bag, spare bag for souvenirs when traveling
  • Fabric
    Ultra-Sil fabric
  • Waterproof
    Waterproof material
  • Zip Options
    Length wise zip for easy access
40 liter

Frequently Asked questions

Able to travel as checked baggage?

No. Baggage handling machinery (especially in many overseas locations) will wear / tear holes in the fabric.

Capable of carrying heavy weights?

The seams and materials will support a surprising amount of weight. But – the grab handles are not padded and the bag has no structure, so we would not suggest carrying anything above 18 lbs / 8 kg for anything more than a short duration.


No. It is only water-resistant. Even though the pack is made of a waterproof material, water can enter through the seams (which are not sealed) and the zipper. A few minutes of light rain would not be a problem, but a downpour would result in the contents of the pack getting wet.