Designed with ultralight backpacking in mind the Ultra-Sil™ Nano™ Dry Sack is made from lightweight  15D siliconized Nylon. With the use of featherweight 15D fabric, these are perfect for use inside your pack to keep gear organized and dry. Using a hypalon roll-top closure that doesn't wick moisture, an oval base for easy packing, these are fully seam sealed for water resistance. Ideal for backpacking, climbing, cycle touring and modular packing where lightweight and low bulk is key.  Assorted Colors

1 liter: wallet, ear buds / personal headphones
2 liter: first aid essentials (avoid hard or sharp objects), gloves/beanie hats
4 liter: shell jacket, gloves/beanie hat, or day-hiking essentials
8 liter: a two-season down sleeping bag or quilt, or dry clothes for backpacking
13 liter: a three-season down sleeping bag, or all your clothes for an ultralight backpacking trip
20 liter: a three-season synthetic sleeping bag plus a 
35 liter: use as a full pack liner for overnight (30 Liter) ultralight backpacks