The Ultra-Sil Stuff Sacks are super strong and lightweight. Sea to Summit uses ultra-light ripstop CORDURA fabric in a great range of colours.
30D Ultra Sil
The 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. Sea to Summit uses Cordura Yarn in all of our 30 denier weight products. Cordura yarn allows us to make much stronger and long-lasting products throughout the range than Sea to Summit could with regular Nylon.