Sea to Summit Ultra-Sil Packable Daypack


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Sea to Summit Ultra-Sil Packable Daypack

Sea to Summit


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Since its first release in 2008 the Sea to Summit Ultra-Sil® Daypack has impressed users with its incredible strength-to-weight performance. The use of siliconised CORDURA® Nylon and reinforcing bar-tacks at stress points enables the Daypack to carry loads 250x its own weight. In 2017 the Ultra-Sil® Daypack won the prestigious Backpacker Editors’ Choice Gold Award for outstanding innovation in design, materials, and performance. To celebrate Sea to Summit have upgraded the Daypack and brought a new look to the entire Ultra-Sil® bag range.

  • Reinforced shoulder straps to reduce bunching up when carrying heavy loads and ergonomically shaped for better fit
  • Webbing daisy-chain on front for a bike light
    Made from Ultra-Sil® CORDURA® Nylon with Polyurethane (PU) coating providing a hydrostatic waterhead of 2000mm
  • Ultra-Sil® stuff sack with handy aluminium carabiner
  • Large capacity, great for lightweight travel
  • Packs down small to fit easily in pockets, purses or luggage
  • Lightweight at only 72g
  • 30 D Cordura Ultra Sil: Sea to Summit's Proprietary fabric Ultra-Sil® employs Cordura® brand yarn which is a high-tenacity Nylon yarn. High-tenacity Nylon is stronger and more abrasion resistant than standard Nylon fibres of the same weight. We use Cordura® Yarn in all of our 30 denier weight products. Cordura® yarn allows us to make much stronger and long-lasting products throughout our range than we could with regular Nylon.
    We use two different versions of 30D Ultra-Sil®: a Sil/PU and a Sil/Sil version depending upon its purpose and use. Sil/Sil 30D high-tenacity Nylon with silicone impregnated on both faces. Silicone impregnation works really well with lightweight fabrics as it improves fabric tear strength, abrasion resistance and packability. Siliconised fabric has a measure of self-healing when punctured. This fabric has a water resistance of 600mm and is used where a product needs to be water-shedding and packable. We use Sil/Sil Ultra-Sil® our packable Ultra-Sil® Day pack, Duffle, Shopping bag and Sling Bag. Sil/PU 30D high-tenacity Nylon with Silicone impregnated on the outer face and a polyurethane (PU) coating on the inside. It has a water resistance of over 2,000mm. The Silicone outer works really well for water shedding and to create a slippery surface for easy packing. The PU coating on the inside improves the waterhead rating and allows for sealing of the seams. We use Sil/PU Ultra-Sil® in products that need to be waterproof, such as our Ultra-Sil® dry day pack, Ultra-Sil® dry sacks, Ultra-Sil® pack liners and many other products. 
Description Capacity Weight
UltraSil® Day Pack 20L 72 g

Customer Reviews

Based on 5 reviews
Anna (Hobart, AU)

Excellent, just as described.

Liz C.
Excellent Service

Gift which will be used for years to come

Brenda H.
Excellent delivery

Very satisfied, both with purchase and speedy delivery

Peter S.
Great little daypack for those travelling light

I really like this item. it's super light. Mind you, there are no extras here: no extra pocketsor nifty outer add-ons for water bottles, no padding for shoulder straps, no waist strap, etc. VERY basic. But it's tiny—fits in your palm—and is a perfect addition for those wanting to keep their main backpack to a carry-on size. It's perhaps expensive for what looks like a flimsy backpack, but it's actually quite tough.

Ali H.
Terrific little pack

Love this awesome little pack. Ultra light and teeny tiny in its storage bag, once unpacked it is durable and big enough for a day pack. After flipping it out of its little bag, I was sceptical that such a decent size pack would fit back into its little storage bag - but I was delighted by how easily it stuffed back in. Water resistance is an added bonus, this little pack will definitely be coming along on my next adventure.

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