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Ultra-Sil Day Pack

Color: Atoll Blue

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An ultra-lightweight daypack that folds down to the size of an egg

Our award-winning Ultra-Sil Day Pack is a minimalist backpack that has incredible strength-to-weight performance and packs down to the size of a tennis ball. The 30D siliconised CORDURA® fabric and reinforcing bar-tacks at stress points enable it to withstand loads many times its own weight.With a 20L capacity, it's perfect for a summit pack, carrying groceries when on foot or on a bike, or as an extra traveling tote. The tiny packed size also easily fits onto your key ring, in a jacket pocket or a purse.With non-padded shoulder straps, our maximum load limit recommendation for a comfortable carry is 15 lbs / 7 Kg.


MATERIAL(S): Lightweight ultra-sil fabric for strength, durability & water resistance
CAPACITY: 20 litres
DIMENSIONS: 11.0 x 7.9 x 18.9 in | 28 x 20 x 48 cm
WEIGHT: 2.5 oz | 72g


  • Ultra-Sil 30D siliconized CORDURA® fabric for strength and durability
  • Reinforced shoulder straps for increased carrying comfort
  • Packs into an attached stuff sack that includes a handy carabiner
  • Packs down small so it easily fits in pockets, purses or luggage
  • Perfect as a lightweight backup or travel bag


  • BEST USE Summit Pack, Groceries, Travel
  • FABRIC Siliconized Cordura fabric for strength and durability
  • SPECIAL Attachment point for a bike light
  • WATERPROOF Water resistant – please see FAQs above
  • ZIP OPTIONS Two-way zipper closure


  • Is it durable?
    With correct care, this pack can last many seasons. Just limit contact with sharp objects or abrasive surfaces as much as possible, since these can damage the fabric.
  • Is it waterproof?
    No. It's only water-resistant. Even though the pack is made with waterproof material, water can enter through the seams (which are not sealed) and zipper. A few minutes of light rain is okay, but getting stuck in a downpour would likely result in the contents of the pack getting wet.
  • What are the differences between the Ultra-Sil and Ultra-Sil Nano day packs?
    The Ultra-Sil Day Pack is made from 30D Ultra-Sil Cordura nylon and includes adjustable shoulder straps and a daisy-chain webbing loop. It has a two-way zipper closure with a generous opening and weighs 2.5oz/ 72g. The Ultra-Sil Nano Day Pack is more compact (packing down to the size of an egg) and made from 15D. It weighs 1oz/ 30g. With an asymmetrical zipper, lightweight fabric, and slightly smaller capacity (18L vs 20L), the Nano is a great option for those that need to save on weight and space.