Ultra-Sil 20L Compression Sack
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View Similar ProductsSea To Summit Ultra-Sil Compression Sack 20L
When you need to compress volume without significantly adding weight, the Ultra-Sil Compression Sack is an excellent solution. Made from a water-resistant, bluesign® approved Ultra-Sil 30D nylon fabric with Non-PFC DWR this compression sack is far tougher than its weight would suggest. Ideal for use inside your pack or travel bag when you need to compress clothing or bulky soft items to allow space for other essentials or fun holiday items.
Details
- Item #STSZ06D
- Responsible Collection
- Bluesign Approved (material)
- Material
- Ultra-Sil (30D nylon, PFC-free DWR finish)
- Volume
- 20L (1220cu in)
- Compression
- yes
- Closure
- drawstring, compression straps
- Dimensions
- 9.4 x 9.4 x 18.7in
- Claimed Weight
- 3.4oz
- Activity
- hike & camp
- Manufacturer Warranty
- lifetime
Reviews
Q&A
What do you think about this product?
Overall Rating
5 based on 39 ratings
Review Summary
Customer Images
Here's what customers have to say
The compression sacks are praised for their ability to significantly reduce the volume of soft items, making packing more efficient. Users report the sacks are lightweight, durable, and waterproof, keeping contents dry. Customers appreciate the quality and customer service. Overall, the sacks are considered a useful travel accessory that can improve the packing experience.
AI-generated from the text of customer reviews.
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Selecting an option will reload the available reviews on the pageAugust 26, 2025
Great compression sack
[This review was collected as part of a promotion.] Great compression sack, I love the strap on the bottom to help pull items out and that two of the straps have buckles making it much easier to open and re-attach - small be very nice touch. Of course the strength of the material is spot on.
Originally reviewed on Sea to Summit
July 12, 2025
Wouldn’t go out without them
[This review was collected as part of a promotion.] I bike pack in Norway on extended bike packing trips. It is wet. It’s important to stay dry and organize. I use these bags for everything.
Originally reviewed on Sea to Summit
July 4, 2025
A Must-Have for Travel – Excellent Compression and Quality
[This review was collected as part of a promotion.] I bought two of these compression sacks—one for myself and one for my wife—for a two-week trip to Iceland, and they were absolute game-changers. The quality is excellent, and they held up perfectly throughout the trip. We were able to fit all our clothes with ease, saving a ton of space in our luggage. These sacks made packing much more manageable and efficient. I’d absolutely recommend them to anyone traveling, and I’ll likely be buying more for future trips.
Originally reviewed on Sea to Summit
December 8, 2024
Works great and holds a lot more than I thought
[This review was collected as part of a promotion.] Got this for my camping quilt and it’ll hold a whole lot more too, now I have to rethink my packing…😄
Originally reviewed on Sea to Summit
October 4, 2024
Compression sacks
[This review was collected as part of a promotion.] Love these sack to keep everything organized in my pack
Originally reviewed on Sea to Summit
February 27, 2024
Great purchase
[This review was collected as part of a promotion.] Really happy with my 20 Liter compression sack. I use it for travel packing. It compressed my clothes with minimal effort and minimal wrinkled garments. Very easy to use and sturdy. I definitely recommend this and my brother-in-law bought two based on my suggestion! See my 'before' and 'after' pictures!!
Originally reviewed on Sea to Summit
February 24, 2024
Great
[This review was collected as part of a promotion.] I love this compression sack it has lasted me a while and I have used this same still for upwards of 2 years and I love it, it is the best combination of lightweight without sacrificing durability along the way.
Originally reviewed on Sea to Summit
January 22, 2024
Ultra-Sil Compression Pack
[This review was collected as part of a promotion.] I purchased one of each of these packs for my daughter and son in law for Christmas because they are frequent travelers who like to contain their luggage to carry ons and a backpack each, especially when traveling internationally. They also go skiing a couple times a year and on that trip they have to pack very bulky jackets, ski pants, sweaters and lots of layers of clothes. They have not traveled with them yet, but they did do an experiment with stuffing one of them and they were amazed at what they were able to pack and how small they were to shrink the sack down to! They can't wait to use them next month for a ski trip. I have now decided to buy one for myself.
Originally reviewed on Sea to Summit
October 28, 2023
Great compression sack!
[This review was collected as part of a promotion.] Used almost daily on our 9 week backpacking trip! Sturdy, easy to use, compressed easily,
Originally reviewed on Sea to Summit
August 12, 2023
Another great Sea to Summit purchase
[This review was collected as part of a promotion.] Like so many Sea to Summit products this one delivers on all expectations. Light, water resistant (bordering on waterproof) and well made. Keep up the great work STS!!!
Originally reviewed on Sea to Summit
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