Sea to Summit Drysack Ultra-Sil Nano 20L


Weight: 36 g

Sea to Summit Nano dry sacks are an excellent option for keeping your gear dry. Having a dry sleeping bag is critical on long hikes, so you should always pack it in a waterproof sack. Ultralight silnylon works really well inside a backpack. These sacks are 30% lighter than regular silnylon dry sacks. They are only a few grams heavier than the ultralight pack liners such as nylofume or polyethylene bags, but the rolltop closure makes them super easy, fast and watertight to pack. These are not intended to be used on the bow of a kayak or packraft.

  • Using a 15D Sil/PU Ultra-Sil® Nano nylon fabric, a lightweight side release buckle and a thinner roll top closure, the Nano sacks are 30% lighter than 30D Ultra-Sil® Dry Sacks!
    • Ultra-Sil® Nano 15D nylon fabric for advanced strength to weight performance
    • Ultra-Sil® Nano has a 1,200mm waterhead
    • Fully seam-sealed for water resistance
    • Reinforced stitching for greater seam strength on all stress points
    • Hypalon roll top closure does not wick moisture
    • Siliconised fabric for easy packing
    • Compact and super lightweight
    • Oval base design for easy packing
    • Designed for ultra light backpacking

    Proper Use:

    1. Any roll-top dry sack must be closed properly to ensure water can’t get in. Begin by folding the Hypalon® strip down first and be sure to have at least three rolls before closing the buckle.
    2. Avoid contact with sharp objects or subjecting the sack to high abrasion, as this could compromise the waterproof fabric.
    3. Like all manufacturers of roll-top, fabric dry sacks, Sea to Summit recommends that sensitive electronic devices be ‘double bagged’ (i.e. putting electronics inside one dry sack then placing this inside a second dry sack). For maximum protection, the use of a waterproof hard case should be considered.
    4. Not intended for situations where dry sack will be submerged under water.


8L: (20 x 15) x 47cm, 13L: (22.5 x 16.5) x 52cm, 20L: (26 x 20) x 63cm, 35L: (31 x 25) x 70cm

8L: 24g, 13L: 28g, 20L: 36g, 35L: 46g

Weight 36 g

Lime, Orange, Grey


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