Since its first release in 2008 the 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 has upgraded the Daypack and brought a new look to the entire Ultra-Sil bag range.
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 our range than we could with regular Nylon.