Sea To Summit

eVent Dry Compression Sack


Air compresses out, water can’t get in—keep your bulky soft gear dry and compressed anywhere space is an issue.

The valve-free eVent® Compression Dry Sack was the first of its kind, earning it a coveted Backpacker Editors' Choice Award in 2007—and it's still a winner today. Squish your bulky soft items down to one-third of their original volume and keep them dry. Made from a sturdy 70D PU-coated Nylon waterproof fabric in the body and lid, the eVent® waterproof but air-permeable base allows air to be pushed out of the sack while stopping water getting in. This is a lighter, simpler and more reliable solution than a purge valve. The four compression straps provide space-saving even compression and the non-wicking roll-top closure delivers a reliably watertight seal.


  • Air compresses out, water cannot get in
  • Compact and lightweight
  • Waterproof and air permeable eVent® fabric base
  • Waterproof seams, double stitched and fully tape sealed
  • 10,000mm waterhead, lightweight durable Nylon fabric
  • Non-wicking roll-top closure with lid
  • Reinforced stitching on all stress points


Size - when in use. This will vary with the density of the contents

X-Large - 27 x 27 x 58cm ( 30L TO 10L)

Large -   23 x 23 x 50cm (20L TO 6.5L)

Medium -  20 x 20 x 46cm (14L TO 4.5L)

Small -  18 x 18 x 40cm (10L TO 3.3L)

X-Small -  15 x 15 x 35cm (6L TO 2L)


X-Large - 210g

Large - 168g

Medium - 148g

Small - 129g

X-Small - 107g

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