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Four-star comfort and increased warmth, whether you’re in you sleeping bag or a crummy hostel bed.

The Sea To Summit 100% Premium Silk Sleeping Bag Liner not only feels luxurious, it provides a layer of protection between you and sketchy hostel or budget hotel mattresses. Thanks to its high quality, machine-washable, ripstop silk, this sleeping bag liner packs down into its own tiny stuff sack and weighs less than a can of soda, so you can easily take it traveling or backpacking. On cold, clear nights under the stars, layer it in your sleeping bag to add up to 10 degrees of warmth to your bag's temperature rating. Sea to Summit used double folded seams for added comfort and durability.

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Here's what others have to say...

1 5

Damaged after first usage.

  • Familiarity: I've used it once or twice and have initial impressions

It was damaged after first usage not very good quality.

5 5

Well worth the money!

Haven't tried this out in a cold-weather situation yet, but it was perfect for backpacking through China. Some of those hostel beds are... questionable in cleanliness and it felt great to slip between my silky soft travel sheet. Wish I had bought this years ago! Special bonus - picked up no odor in my stinky traveler's bag.

4 5

Pretty good for versatility

I bought this to protect the interior of my down sleeping bags from oils and sweat. I really like the way the fabric feels which is really nice on hot muggy days. It does had a bit of warmth but more importantly I hate the sticky feeling you get when your skin touches the nylon of the sleeping bag. If you're doing big mileage trips, then getting a good nights rest is a major priority. I also like it because it gives a bit more versatility in terms of temperature control. In the summer I'll either use this exclusively or keep my sleeping bag wide open. My only complaint is that I've had this for about a year now and it has torn in a number of places. In all fairness I tend to toss a lot in my sleep so that might have been it. I've since run it through a sewing machine to repair it and it's fine now.

5 5

Stay Smoove!!

Paired this with my Marmot spring bag on a cold night..Kept toasty..The real advantage of this thang for me is how it will extend the life of your sleeping bag...I can marinate in my bag at fire camp on a fourteen day roll and just wash the liner (maybe) when i get home...Also, it is easy to wash in a sink or a stream. The only small issue I had was static...starched it a little and problem solved. OOOoo, dats soft!!

1 5

Poor Quality

  • Gender: Female

Let me start by saying I own many products by Sea to Summit and have never been disappointed until now. I own a Thermolite Reactor Compact Plus Liner, which is warm and well made. After returning from a backpacking trip in Patagonia, I decided to give the Silk Liner a try - just to cut down a few oz of the pack weight. I tested it at home - crawling in it inside my sleeping bag on the twin size mattress - seemed to be warm. But after three tests in different evenings/temperatures - each test lasting about 1 hour - it developed two tears at the bottom along with other minor scuffs; I didn't even twist or turn a lot. Getting out then getting back in was also a pain since the fabric would cling together; I don't see how I can manage it in the actual camping condition when you are half awake/asleep in the darkness. How disappointing! I initiated a live chat with the customer service, who assured me that I can absolutely return the poor quality product as they have the 100% satisfaction guarantee. Kudos to! Hope Sea to Summit can improve it in the future.

1 5

Horrendous quality

  • Gender: Female
  • Familiarity: I've used it several times

I bought this to add warmth to my 35 degree sleeping bag on a recent camping trip in Norway. I used it about 7 nights in a 2 week period. On first glance, it looked great, the pacific blue is a nice color and it packs so small and light. On closer examination, I saw that the seams and hemlines are quite poorly done. By the 2nd or 3rd use, I heard a few seams tear without much provocation. By the 7th night, my feet were sticking out of huge holes in the bottom and when I held the silk up to the light I could see that the fabric itself was stretched and sagging. I had ample room in the bag and don't move much in my sleep and the thing practically fell apart anyways. I am so disappointed because it seemed to be exactly what I wanted, but is now in such bad condition I won't be able to use it again. What a waste.

Responded on

I wrote that review a few months ago and since that time Sea to Summit has replaced the bag free of charge. The customer service was excellent, I just hope the next bag is better quality. I haven't had an opportunity to try it out yet, I just wanted to give them the positive feedback they deserved for the good service.

Going to Ghana, looking at StoS and Cocoon...

Posted on

Going to Ghana, looking at StoS and Cocoon 100% silk sleep sacks. thinking of getting the double for future trips if the hubby joins me. Good chance I'll be sleeping in a single bed with a double sleep sack and a mosquito net. Will it be too large and slippery so I'm losing my mind and should go for the single or is double OK? ($ is issue I'm a doctoral student) suggestions?

Responded on

I have a double sized one that I use on my own and with my wife. I haven't had any issues with it being too big.

2 5

Great expectations

I was really looking forward to trying out the new liner as I was experiencing some discomfort in my current down sleeping bag. However after a night out in the bush I must say I was really disappointed. I think it's the silk material that made the sleeping bag feel wet. Very uncomfortable and not for me.

5 5


Only used it one time so far.It worked for me.I thought it would bunch up,but worked great.It has a place in my pack.

3 5

Sea to Summit vs Cocoon

Please see my review "Cocoon Vs Sea to Summit" at the Cocoon COC003 product. There a some key differences to consider before you drop your $70 for this liner. Also, the Cocoon is $10 cheaper

In brief, entry and exit on the S2S is not as user friendly as the Cocoon. Also, the stuff sacks are very different and the zipper on the S2S is troublesome whereas the Cocoons' more traditional stuff sack is much more user friendly.

I believe the quality is quite comparable and the dimensions of each are within an inch or two. Because Backcountry is so consumer friendly, you can do as I and get both to compare and take a closer look before making your final decision.

And remember, when returning ask Backcountry for a complimentary return shipping label. They're very generous with that. Thank you Backcountry!

Responded on

G’Day – Barry from Sea to Summit here.

We read the above review this morning, and were a little confused by it and wondered if the reviewer was comparing like products. So – we called our good friends at in order to get a little clarity. As always, they were super-helpful.

Here’s what happens when you compare ‘apples to apples’:

Sea to Summit’s 100% Silk Rectangular Liner costs $54.90. It does not have a side opening.

Sea to Summit’s 100% Silk Traveller Liner costs $69.90. It has a built-in pillowcase *and the first 12” / 30cm of each side are open to permit easy entry*

Sea to Summit also manufactures a 100% Silk Mummy Liner with Hood ($64.90) and a 100% Silk Long rectangular Liner ($59.90). *All of the above liners are made of the highest grade ripstop silk available (10 Momme)*. carries two liners from the other company mentioned in the review; the COC0003 rectangular Travel Sheet ($79.95 in colors, $59.95 in ‘natural’) and the COC0009 Mummy Liner ($79.95). Sea to Summit's "Traveller" model would be most comparable with the Cocoon rectangular Travel Sheet that is offered in colors, although ours has the additional pillow case at the top. Our "Mummy liner with hood" would be comparable to Cocoon's Mummy Liner.

The zippered pouch is popular with most users; if you’d prefer a stuff sack, drop us an email at

Hopefully, the above will allow end-users to make an objective comparison between Sea to Summit Silk Liners and other products on the market.



Responded on

Barry, you responded to this review so quickly, but, you've neglected months of other reviews within which customers questioned and demanded answers as to the quality of your product. I own other Sea to Summit products and have generally been satisfied, however, I will NOT be buying this product (and I was coming on here right now to do so) because of the many negative reviews.

I know has a 100% satisfaction guarantee, but, I would be remiss as a consumer if I were to purchase this product only to have to return it to and have them be stuck with a cruddy product. Please take everyones comments into consideration and create a stronger liner. I'm confused how silk, the strongest material known to man, is crafted so cruddy in this situation.

5 5

My past TSA security blanket

I love this liner, it comes with me on all my adventures and lives in my carry on bag. Getting stuck at DFW is much more pleasant if you can wrap yourself in silk and pass out under some benches. After (if) I arrive at my destination the liner adds warmth to my sleeping bag and protects it from all the various grime I drag in. Get one, they are worth the price.

5 5

Sea to Summit Premium Silk bag liner

Packs up small, comfortable, easy to use and store and made a real difference in terms of warmth as was sleeping next to glaciers in a bag that wasn't quite warm enough without the liner. Thought it might shift around in the bag or be an annoying fabric against my skin but it was comfortable and didn't seem to bind at all. I just found I had to be careful when getting out of my bag and getting dressed in the tent not to end up with it tucked into my pants and hanging behind me like a piece of overly large tp. Did that twice. Didn't impress anyone! :)

4 5

Wow, I can't believe how light and small this is

Used this Sea to Summit liner once so far; love how tiny it is. The material is super cool and breathable too.

Doesn't add nearly as much warmth as I expected from a silk liner, but it will be great for summer nights.

This liner has a very generous cut - the rectangular one with no hood has plenty of material to pull it up under your head and give you plenty of wiggle room in your bag. So far, I'm quite pleased.

5 5

Sea ot Summit Silk Bag Liner

I have used one of these for over a year and just bought one for my son. They are light weight and pack down very small. They are not cheep, but a good investment for anyone with a nice bag.

3 5

A liner, but no real hood...

This liner is beautifully made and the feel of the silk is nice. Colors are attractive though randomly available and generally cannot be specified. Being ripstop bodes well for long-term durability and should avoid fatal snags from travel-worn fingernails and toenails. It is very lightweight and packs small, but I really wish Sea to Summit had not replaced the drawstring pouch with a zippered one. This one takes longer to pack because the liner _just_ fits inside and it takes some careful work to avoid catching the liner in the zipper of the storage pouch.

The liner has no loops at the corners to tie into a sleeping bag or to hang it for drying after washing.

My biggest disappointment -- and the reason for my return -- is the liner does not have a real hood (no tunneled drawstring or cord lock to close the top). Instead, the top of the liner is plain at chest level and the "hood" is simply a semi-circular flap extension of the bottom. It is not large enough to completely line and protect the hood of my sleeping bag, as I had hoped At best, it would just cover the back of one's head. It would be warmer and more effective with a drawstring or elastic across the top at the chest, hood, or both to prevent drafts and to keep it in place when turning at night. The silk built up a really strong static charge just removing it from the storage sack.

As a general liner, it is good and competes well in the market; it just isn't truly a _hooded_ liner and could use a few needed improvements to be truly great.

What is the best way to create a slit on...

Posted on

What is the best way to create a slit on each side of the liner to make it easier to get in and out? With no loops or strings at the corners, how should we attach the liner to the bag?

Best Answer Responded on

I think it would be best to use a pair of scissors.

Responded on

You dont need to attach the liner to the bag. What I do, lay down, pull the liner around me, then get into the sleeping bag. I dont think I know of an easier way. I just dont want to start hacking into my expensive liner!

4 5

Think we will really like it

Our silk liner arrived yesterday and we put it in our new KELTY Supernova 30 3 in 1 double bag. We will use this in our camper van. The Supernova is Super!!

We were surprised and disappointed in the silk liner that there are no loops for attaching it to the bag (none in the bag either) though a short trial showed it to stay put quite well. The real drawback is that there is no slit or partial opening on either side to make it easier to enter the liner. We will attempt to carefully slit the seam a couple feet on each side. As older folk we need to get up once in the middle of the night which will be difficult in a cramped space without the slit.

Will the mummy with hood version be in...

Posted on

Will the mummy with hood version be in stock soon?

Responded on

Hey Jay,

We have a fair amount of the Mummy w/ Hood version coming back in stock with an ETA of 11/19/2010.

How small does the traveller version (with...

Posted on

How small does the traveller version (with pillow insert) get when packed? (What would you compare it to?)

Does the traveller version have a size zip or you just have to slide in from the top?

Responded on

When the Traveler with the pillow insert is packed in its zippered stuff sack I would compare it to a 12oz Soda Can - but it still compresses slightly to tuck it down further in your bag or carry-on.

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