Sea to Summit Ultra Sil Dry Sacks


The Sea to Summit Ultra-Sil® Dry Sack is the ideal dry sack for backpackers who need to protect their belongings from wet weather.

SKU: Dry Sack Categories: , Brands: .


Sea to Summit Ultra Sil Dry Sacks are a super light weight dry sack designed for use inside a pack. Made from Siliconised Cordura for maximum durability Ultra-Sil Dry Sacks will keep your pack light and you gear bone dry! Ultra-Sil Dry Sacks use Beamis Seam Tape which is the highest quality available

All sea to Summit Dry Sacks use Hypalon instead of webbing on the roll top closure. Hypalon does not wick water into the closure unlike webbing Ultra-Sil Dry Sacks are constructed using Coats Brand threads which are the global leader in threads and sewing products. We use a short stitch length to ensure a high degree of quality

Roll top closure is precisely designed with a longer Polypropylene stiffener opposite the Hypalon which helps seal the closure flat which further improves watertight seal and means that the roll top closure is less likely to unroll when under pressure A custom designed shorter symmetric side release buckle can be clipped together either way around which also aids keeping the roll top closure secure

All seams are top stitched which keeps taped seams flat and even 1 L 2 L & 4 L are flat rectangular shaped design. 8 L 13 L 20 L 35 L are round base design. All sizes in the Nano dry sacks have an oval base design.

  • Ultra-Sil® 30D siliconised high-tenacity CORDURA® nylon fabric for exceptional strength
  • Ultra-Sil® fabric has a 2,000mm waterhead
  • Non-wicking Hypalon roll-top closure with stiffener at the top for an improved seal
  • Fully seam sealed for water resistance
  • Translucent for easy visibility of contents
  • Slippery finish for easy packing
  • Round base in all sizes
  • Use: backpackers, cycling touring, travellers

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).
  4. Not intended for situations where dry sack will be submerged under water.

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