The Ultra-Sil Pack Liner won the prestigious Backpacker Editors' Choice award in 2006. It remains an excellent solution for keeping contents of your pack dry. Made of 30D Ultra-Sil fabric using CORDURA yarns the Pack Liner is lightweight and practical. The oval shape fits inside packs easily and the extra wide opening roll-top closure folds in three before being rolled and sealed with the low profile buckles. Bright colors to help with visibility when packing and unpacking.