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Stuffable Bags: The Sea to Summit Ultra-Sil Daypack

sea to summit ultra sil backpack

stuffable daypackOne of the things I ALWAYS pack on a trip is a durable, stuffable daypack. With the ability to collapse into the size of a pocket or hand-sized pouch, they take up virtually no room but offer all the convenience a space-conscious traveler wants.

Have a little less stuff? Just cram this bag into your bigger backpack and forget about it.

Buy too much? Heading out for a quick walk around town? Pop open your daypack and you have an easy, light bag ready to go!

Yes, I LOVE stuffable bags and especially daypacks, but it wasn’t Sea to Summit delivered a sample of the Sea to Summit Ultra-Sil Daypack to me that I knew how much.

This bag PACKS UP SO SMALL! I mean… just look!

Sea to Summit Ultra-Sil Daypack - Fits in the palm of your hand!
Sea to Summit Ultra-Sil Daypack – Fits in the palm of your hand!

It’s so tiny you can justify snapping it on a keychain, or tossing it in your smaller purses. Honestly, part of the reason I enjoy this bag so much is because I just like showing people how it stuffs itself into this adorable little pouch.

Stuffing the Sea to Summit Ultra-Sil Daypack into its pouch
Stuffing the Sea to Summit Ultra-Sil Daypack into its pouch

But, that’s not all:

  • This stuffable daypack is made of siliconized nylon – the kind that doesn’t rip or tear.
  • It’s durable enough to handle everything from groceries to books to a few pieces of electronics.
  • It weighs nothing (just 2.4 ounces).
  • It holds 20 liters.

I used this daypack quite a bit on the Silk Roadistan tour earlier this year. Sure, I had my super awesome PacSafe SlingSafe daypack for my main travel days, but that wasn’t always needed. A quick walk around the ger in Mongolia, where I just wanted a bag to hold a bottle of water and a jacket, called for the Sea to Summit Ultra-sil Daypack. As did a quick visit to the shops for food and beverages.

Using the Sea to Summit Ultra-Sil Daypack in Kyrgyzstan to carry essentials home from the shops.
Using the Sea to Summit Ultra-Sil Daypack in Kyrgyzstan to carry essentials home from the shops.

And, with its great unisex qualities, even Pat wore it around here and there.

Pat wearing the Sea to Summit Ultra-Sil Daypack
Pat wearing the Sea to Summit Ultra-Sil Daypack

My main gripe with this cute stuffable daypack would be the lack of extra pouch or zippered compartment. I would have loved a front pocket to toss in smaller items instead of being forced to throw them all in the single compartment.

Besides that, the Sea to Summit Ultra-Sil Daypack makes for a great addition to any female’s packing list!

>> Pick up the daypack on Amazon.

*This daypack was provided free-of-charge by Sea to Summit, but I honestly love it and use it regularly on my travels.

Written by Brooke

I run the show at Her Packing List and love packing ultralight. In fact, I once traveled for 3 entire weeks with just the contents of a well-packed 12L handbag. When I'm not obsessing over luggage weight, I'm planning adventures or just snuggling with my pet rabbit, Sherlock Bunz.

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Sea to Summit Ultra-Sil Daypack - Fits in the palm of your hand!
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Reader Interactions


  1. Lottie says

    This looks to be one of those items that you can live fine without, but once you have one you use it all of the time. I can think of so many situations in the past year where this would have come in handy.

    The stuffable daypack will definitely be going on my Christmas list!

  2. Nichola says

    Thanks for this review, this was exactly what I was looking for and I got one last weekend and have already used it a couple times. It will be great for my Costa Rica trip in May for carrying a light rain jacket or umbrella in while out and about because you just never know what it’s going to rain! Thanks again 🙂

  3. Jess Graff says

    I love this thing. I got one after reading this and am so happy about this purchase. I have used it so many times in the month or so that I have had it. It lives in my purse and gets pulled out for groceries, other shopping, day trips, library adventures, and unexpected book loans from friends. My boyfriend thinks it is the coolest little gadget too and is excited to get one of his own.

  4. Vanessa says

    This looks awesome! I got a similar product, from North Face’s Summit Series, that’s 26L. I’m trying to move away from traveling with backpacks, using a purse, but there are so many occassions when a backpack is the best choice for hikes, nature walks, day trips, laundry, market trips, etc…. Plus it can really save your back!

  5. OCDemon says

    I had this exact bag until I accidentally left it in some Peruvian hostel. The packed size was spectacular, it carries a lot, and it’s a lot tougher than it looks, but when I decided to replace it I got a ChicoBag daypack instead, which has the extra pockets and is only slightly bigger when packed. I still miss it sometimes, though.

  6. Hannah says

    I took this bag on a trip to Europe last summer and while it was handy in all the ways already mentioned, I would not recommend it in hotter climates because the material was not breathable and actually seemed to trap so much heat between my back and the fabric (especially where my bare shoulders were touching it). It was a literal sweat-factory.


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