Sea to Summit Ultra-Sil Event Compression Drysacks

Weighs 90g
Code: AW15506V
  • From £19.99
  • (FREE Delivery on orders over £15)
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The lightweight, waterproof Sea to Summit Ultra-Sil Event Compression Dry Sack compresses your clothing and gear to 1/3 the volume while keeping it dry.

Sea to Summit says:

Based on the success of our Compression Dry Sack, we've made a lighter version from 30D UltraSil. We retained all the clever functionality of the original design with all the lightweight touches of our Ultra-Sil technology. The Ultra Sil Compression Dry Sack compresses gear to one-third the volume while keeping it dry.

The Sea to Summit Ultra-Sil Event Compression Drysack is ideal for compressing your gear while keeping the contents dry. This valve-free dry sack uses a breathable base made of waterproof eVent fabric, which allows air to be pushed out, but keeps water from entering.

Waterproof seams are double stitched and fully taped for excellent durability and resistance to moisture. The roll-top Hypalon closure, lid and 3 straps evenly compresses and maintains the compressed size. The Ultra-Sil Event Compression Dry Sack is roughly half the weight of the original Sea to Summit eVent Compression Dry Sack so its ideal for those who want to save a little more weight.

- Reviewed by Ultralight Outdoor Gear

  • Ultra-Sil® 30D siliconised high-tenacity Cordura® nylon fabric for exceptional strength
  • Ultra-Sil® fabric has a 2,000mm waterhead
  • Waterproof seams, double stitched and fully tape sealed
  • Waterproof and air permeable eVent fabric base
  • Hypalon closure does not wick moisture
  • Reinforced stitching on all stress points
  • Air compresses out, water cannot get in
  • 40% lighter than the 70D Compression Dry Sack
Item Volume Compressed Volume
Oval Base x Height Weight
XXSmall 3.3 L
1.3 L
13 x 25 cm 50g
XSmall 6 L
2 L
15 x 34 cm 56g
Small 10 L
3.3 L
18 x 40 cm 75g
Medium 14 L
4.5 L
20 x 46 cm 90g
Large 20 L
6.5 L
23 x 50 cm 100g
Showing our 2 Sea to Summit Ultra-Sil Event Compression Drysacks reviews with an average rating of Excellent. Would you like to write a review?
Review Summary - 5 out of 5 based on 2 ratings.
May 27, 2021 | Samuel Hitchen
Perfect for a sleeping bag

I woke up one day and I realised I needed to up my storage sack game. I was sick of using a standard dry bag as I couldn't get it as small as I could when using the compression sack that came with the bag. But then, Sea to Summit had these, what more could you need, it serves both purposes, it compresses your sleeping bag next to nothing, and it's totally dry in there. Has some fancy one-way air out tech using dry-vent panelling on the bottom which helps when compressing the bag to get extra air out. Very fancy. Yeah it's a fair few quid, but I would say it is fully worth it.

Ultralight Outdoor Gear Limited
June 2, 2019 | HK
Extremely good & lightweight drybag

Got the size medium and I'm totally satisfied by it! Using this drybag to keep water out of my sleeping gear. It helped me so much to compress my sleeping bag and a bag liner into my Osprey Kestrel - bag's bottom compartment. My sleeping bag or liner does not have a waterproof storage bags - so this was the answer for that...and I also saved weight and space. That's a deal that I love!

Ultralight Outdoor Gear Limited