The Sea To Summit Ultra-Sill Drysack is 50% lighter than the popular Lightweight Dry Sack making these bags the perfect choice for backpacks. They're made of Siliconized Cordura, which is one of the lightest and toughest waterproof nylon fabrics available. Now you don't have to choose between keeping your gear dry and keeping it light.
- Ultra-Sil 30D siliconized high tenacity Cordura nylon fabric for strength
- Non-wicking Hypalon roll top closure with stiffener at the top for a better seal
- Fully seam sealed for water resistance
- Slipper finish for easy packing
- Round base in all sizes
- Delrin side release buckle for a positive click on closure