Ultra-Sil Dry DayPack from Sea To Summit Gives Backpackers Day-To-Day Mobility In Any Environment

Tom Malone/Adventure Tribune
Disclaimer: Sea To Summit provided us with gear to sample; however, all opinions and experiences are our own.

When I travel to another city or country (whether on a road trip or airplane), I only pack my 55-liter backpack. It allows me to travel on a plane without having to check a bag, and it allows me to lug my gear around in the most comfortable way possible while moving from Point A to Point B.

The only issue with this is, when I reach my destination and want to go exploring, I only have a completely full 55-liter backpack. When I want to do a day trip through a city, or go on a new hike, I have to make a decision: unpack my perfectly organized massive backpack and carry only my daily necessities, or fit everything I need for the day in my pockets.

Thankfully, I no longer have to make that decision. With the Ultra-Sil Dry DayPack from Sea To Summit, I can bring a daypack with me wherever I go. And, I don’t have to use valuable space or weight in my 55-liter pack to do so.


Sea To Summit’s Ultra-Sil Dry DayPack compacts into a 3.5-ounce, 2.5 x 5-inch pouch that’s about the size of my fist, but it unfolds into a completely waterproof, 22-liter backpack.

The pack features a compression lacing system on the outside of its shell, so I can carry a light, waterproof jacket, or a rolled up sweatshirt (even though this pack allows for enough space inside as well).

Our Experience

I found the pack to be extremely comfortable. The straps felt like a standard backpack; they didn’t dig into my shoulders like a drawstring bag usually does.

The single-pocket pack also allowed enough room for everything I could possibly need in a daypack. I was able to fit a DSLR camera, sweatshirt, notebook, gloves, beanie, iPad, and snacks into the pack with plenty of room to spare.

A quadruple roll with a buckle made the top of the pack completely waterproof. Even after walking for a mile in a light rain, my camera and iPad were dry, as were my warm clothes.

Compacting the pack back into its tiny pouch took some time, but once I figured out the best rolling method, it fit into its case without a problem.


The Adventure Tribune crew plans to bring the Ultra-Sil Dry DayPack with us to Peru, Ireland, and France this summer in order to expand our capacity to explore cities and backcountry on day treks without overloading our large-capacity backpacks in the process.

In short, this is the daypack I’ve been waiting for.

Check It Out For Yourself

To try this liberating, waterproof, lightweight daypack for yourself, visit their website at While you’re there, be sure to check out their other Traveling Light products to enhance your backpacking efficiency.

Photo Evidence

Tom Malone/Adventure Tribune
The Ultra-Sil Dry DayPack compacts and can fit in the palm of your hand.

Tom Malone/Adventure Tribune
The Ultra-Sil Dry DayPack expands to fit all of your day-to-day exploration necessities.


Tom Malone is the Editor-In-Chief of The Adventure Tribune and author of adventure novels, like Across Americana. He is based in Denver, Colorado, where he adventures through the Rocky Mountains while not traveling abroad.
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