Sea to Summit eVent Compression Dry Sack L (stseventcompdrysackl)
The Sea to Summit eVent Compression Dry Sack L (stseventcompdrysackl) is a different take on the compression dry bag: there is no valve. The base is built from air-permeable eVent® waterproof fabric, so air is pushed straight out through the bottom as you cinch the straps — but water cannot get back in. A 20 liter load compresses down to roughly 6.7 liters, which is why this sack is a favorite for sleeping bags, insulation layers and bulky clothing on canoe trips, bikepacking rigs and multi-day hikes.
Features
- Valve-free compression — air escapes through the waterproof, air-permeable eVent® fabric base
- Rugged 100D nylon body and lid
- Waterproof seams, double stitched and tape sealed
- Roll-top Hypalon® closure with lid and four straps for even compression that holds its packed size
- Reinforced stitching at every stress point
- Webbing pull handle on the bottom for easy extraction from a loaded pack
- Compact and light for the volume it swallows
Specifications
| Model |
eVent Compression Dry Sack – L (Large) |
| SKU |
stseventcompdrysackl |
| Size |
9" x 20" |
| Weight |
5.9 oz |
| Volume (max / compressed) |
20 L / 6.7 L |
| Body & lid fabric |
100D nylon |
| Base fabric |
eVent® waterproof, air-permeable |
| Closure |
Hypalon® roll top with lid and 4 compression straps |
| Seams |
Double stitched and tape sealed |
Proper Use
- Any roll-top dry sack has to be closed correctly to keep water out. Fold the Hypalon® strip down first and make at least three rolls before clipping the buckle.
- Avoid contact with sharp objects and high-abrasion surfaces, which can compromise the waterproof fabric.
- As with every roll-top fabric dry sack, Sea to Summit recommends double-bagging sensitive electronics (one dry sack inside a second). For maximum protection use a waterproof hard case.
Frequently Asked Questions
How much does the Sea to Summit eVent Compression Dry Sack L hold?
The Sea to Summit eVent Compression Dry Sack L (stseventcompdrysackl) measures 9" x 20" and holds up to 20 liters uncompressed. Cinching the four straps takes that load down to about 6.7 liters, so you recover roughly two-thirds of the space inside your pack.
How does the valve-free compression on the Sea to Summit eVent Compression Dry Sack L work?
Most compression dry bags need a one-way purge valve, which is one more part to clog or fail. The Sea to Summit eVent Compression Dry Sack L (stseventcompdrysackl) uses an eVent® fabric base instead: the material is waterproof in one direction but permeable to air, so squeezing the sack pushes air straight out through the bottom while liquid water is blocked from coming back in.
Is the Sea to Summit eVent Compression Dry Sack L fully waterproof?
The Sea to Summit eVent Compression Dry Sack L (stseventcompdrysackl) has tape-sealed waterproof seams and a non-wicking Hypalon® roll-top closure, so it keeps contents dry through rain, spray and an accidental dunk. Like all roll-top fabric dry sacks it is not designed for prolonged submersion — for that, use a waterproof hard case.
How do you close the Sea to Summit eVent Compression Dry Sack L properly?
Fold the Hypalon® strip at the mouth down first, then roll the top down at least three full turns before clipping the buckle. Three rolls is the minimum that creates a reliable water seal on the Sea to Summit eVent Compression Dry Sack L (stseventcompdrysackl); fewer rolls will let water track in along the closure.
What should you pack in the Sea to Summit eVent Compression Dry Sack L?
The 20 liter size of the Sea to Summit eVent Compression Dry Sack L (stseventcompdrysackl) suits a three-season sleeping bag, a down jacket and midlayers, or a full change of camp clothing. Anything lofty and compressible gains the most from the four-strap compression; hard or sharp gear is better carried elsewhere.
Where can I buy the Sea to Summit eVent Compression Dry Sack L?
You can buy the Sea to Summit eVent Compression Dry Sack L (stseventcompdrysackl) at Going Gear, an authorized Sea to Summit dealer. Every sack ships new in original packaging with the full manufacturer warranty.
