Sea to Summit Ultra-Sil Packable Daypack

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.

Features

• 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’sProprietary 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.