Sea To Summit Ultrasil 1.5L Stuff Sack

Our Ultra-Sil® Stuff Sacks are super strong and lightweight. We use ultralight ripstop CORDURA® fabric in a great range of colours.

Features:

– Water-resistant, bluesign® APPROVED Ultra-Sil 30D nylon fabric with a C0 non-PFC DWR finish
– Easy-to-operate opening with durable hypalon pull-tabs on drawcord and throat
– Slippery fabric and secure grab handle at base for effortless sliding in and out of packs

Specifications:

– Dimensions: 20.6 x 11.5 x 11.5cm
– Weight: 1.5L: 16g

Technology:

– 30D Ultra-Sil® is a 30 denier 240T Nylon made from a high-tenacity Cordura® brand yarn. High-tenacity nylon is stronger and more abrasion resistant than standard nylon fibres.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. Silcone 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 water resistant but not necessarily waterproof. We use Sil/Sil for products where ultralight weight and strength are most important, such as our 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 seam sealing tape to bond. We use Sil/PU 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.