







💼 Stay dry, stay light, stay ahead—your gear’s new best friend.
The Sea to Summit Ultra-Sil Dry Bag is a 3-liter ultralight waterproof storage solution crafted from bluesign-approved 30D Ultra-Sil Cordura nylon. Featuring a 2000mm waterhead rating, double-stitched and tape-sealed seams, and a secure Hypalon roll-top closure, it ensures maximum protection against moisture. Its translucent, streamlined design saves space and resists rolling, while a patent-pending quick-repair buckle offers field serviceability. Ideal for backpacking, bike touring, and travel, it weighs only 20 grams and comes with a lifetime manufacturer guarantee.









| ASIN | B0BXBKF5CC |
| Best Sellers Rank | #16,854 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #39 in Marine Dry Bags |
| Brand Name | Sea to Summit |
| Color | Atoll Blue |
| Customer Reviews | 4.7 4.7 out of 5 stars (333) |
| Date First Available | March 22, 2023 |
| Item Dimensions LxWxH | 4.33 x 9.06 x 10.63 inches |
| Item Package Dimensions L x W x H | 7.17 x 2.36 x 0.87 inches |
| Item Weight | 20 Grams |
| Manufacturer | Sea to Summit |
| Material | Nylon |
| Model Name | Saco Estanco Ultrasil 3l Azul |
| Package Weight | 0.04 Kilograms |
| Part Number | ASG012021-020202 |
| Size | 3 liter |
| Style | 3 Liter |
| Suggested Users | Unisex Adult |
| Warranty Description | Manufacturer guarantee against defects in materials or workmanship for the lifetime of the product |
J**M
Dry bag keeps things dry
Perfect ditty bag that is durable and waterproof. I use it to keep my toiletries and a roll of TP.
R**E
Camera, notes for logbook, etc. all stay dry on board.
Super quality for my dive camera on boat. Excellent nylon and very durable.
H**Z
Would recommend.
Bounght this before a hiking trip to Iceland. Despite the rain, kept my stuff dry. Lightweight material. Good for backpacking but probably not very strong and would tear if stressed. Nevertheless, it is a waterproof bag and does what it is supposed to do.
P**E
For internal organization; slippery material
Great bag for its use — an internal dry bag. It’s a very slippery material and does not strap down well. It is made of an ultralight 30D fabric and is not good for abrasive usages.
J**C
Well-made and sturdy
Well-made and works exactly as advertised. I used this as a portable washing bag while on vacation. I filled with water and laundry soap, along with a few items of clothing. I was able to close the bag securely and agitate my clothes to clean them. The bag didn't leak, so I presume it would work just as well to keep water out.
A**H
I like it, but…
Good product, seems well priced for what you get. It seals very well, and appears to be waterproof (though it hasn’t been submersed yet). I used it as my bear hang food bag on a 4-day backpacking trip, and it was large enough to hold everything I needed to keep away from my tent during the night. It loses a star because on the second day it scraped against the tree I was hanging it in and got a 2 inch tear. I was able to repair it easily with a nylon patch. I mostly blame myself for not being more careful, as the bag isn’t even advertised as “tear proof”, but I was expecting it to at least be able to withstand scraping against tree bark, as I imagine many people are using this as their bear hang. Long story short: would recommend, just a little delicate.
T**Y
Great as a compression bag. Not JUST to keep things dry.
Not just for backpacking. Great for traveling too. This works better than most compression bags. Put your clothes in here and keep rolling down the top until you cannot compress any more. If you’re traveling with only carryon luggage, this will give you more space and allow you to be organized.
A**0
Nicely done
Nice and light weight and definitely more durable than I thought. I was able compress items in them and they held together nicely. They worked as stated and no complaints at all.
A**K
Arrived in good condition
Y**O
プロモンテの軽量テント収納のために購入しました。軽量で防水性も高く満足しています。
Y**U
主にテン泊のときの着替えを入れてますが、これがあれば雨のときなども安心です。
E**L
L’articolo è di qualità, però c’è scritto 5l e invece è da 8l
C**S
Wer ein sehr robustes wasserdichtes Säckchen sucht ist hier richtig. Praktisch finde ich auch, dass es eine Art Boden hat. Für Outdoor sehr gut geeignet. Für in den Rucksack eher nicht so, da die Materialstärke schon recht kräftig ist und mir zu starrig wäre. Aber dafür war es auch nicht gedacht. Der Verschluss funktioniert gut, leicht zu händeln, alles dicht! Schnelle Lieferung.
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