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The Sea to Summit Evac is a waterproof compression dry bag that uses an air-permeable base to purge trapped air while keeping water out. You roll the top, clip it, then cinch the side straps to squeeze sleeping bags and clothing down small. It suits backpackers and bikepackers who need bulk cut and gear kept dry. Against fully sealed roll-top sacks it compresses better and vents air, but it is heavier and pricier than a plain stuff sack, and the coated fabric needs care over time.
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Lowest price we've seen: $39.95 on Nov 14 at House Of Scuba. Tracked across 11 stores since Nov 14.
Owners rate the Evac highly for cutting pack volume and keeping gear dry. Many say the air-venting base makes compression noticeably easier than sealed dry bags. A few find it heavier and fussier to close than simple stuff sacks.
The Sea to Summit Evac Compression Dry Bag XS is a waterproof pack sack. It works as both a compression sack and a dry sack.
It is made of nylon (polyamide).
