ENDS TODAY! Gear Closet Clearance: Apparel & Gear—Shop Now
When autocomplete results are available use up and down arrows to review and enter to select. Touch device users, explore by touch or with swipe gestures.


  • Training

New Styles, More Savings:

Up To 40% Off The North Face

Sea To SummitUltra-Sil eVent 3.3-20L Compression Dry Sack

Sea To SummitUltra-Sil eVent 3.3-20L Compression Dry Sack


Select Style & Size:


4.5 out of 5 stars
21 Reviews

Ultra-Sil eVent 3.3-20L Compression Dry Sack

The Sea To Summit Ultra-Sil eVent Compression Dry Sack compresses gear like dry suits or sleeping bags to one-third of their volume while keeping them dry thanks to the eVent waterproof membrane. Ultra-Sil nylon keeps this sack remarkably light for how strong it is, and the Hypalon closure makes sure your gear doesn't slip out. The three Cordura straps shrink everything with ease so you can hop down the trail knowing that you didn't sacrifice any space in your pack.


  • Compression dry sack that keeps your gear dry and nearby
  • eVent waterproof membrane seals out moisture for dry gear
  • Ultra-Sil nylon shell handles wear and tear from daily use
  • Cordura straps can handle a bunch of force to compress well
  • Hypalon closure keeps things where you put them for peace of mind
  • Three compression straps offer reliable performance every time
  • Item #STS000E

Tech Specs

[membrane/laminate] eVent, [shell] 30D Ultra-Sil nylon, [straps] Cordura
[xx-small] 1.3 - 3.3L (79 - 201cu in), [x-small] 2 - 6L (122 - 366cu in), [small] 3.3 - 10L (201 - 610cu in), [medium] 4.5 - 14L (275 - 854cu in), [large] 6.7 - 20L (409 - 1220cu in)
Hypalon waterproof roll-top
[XXS] 5 x 10 in, [XS] 6 x 14 in, [S] 7 x 16 in, [M] 8 x 18 in, [L] 9 x 20 in
Claimed Weight
[xx-small] 2oz, [x-small] 2.3oz, [small] 2.6oz, [medium] 3.2oz, [large] 3.4oz
Recommended Use
backpacking, hiking & camping, paddling
Manufacturer Warranty

What do you think about this product?