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Note on sheet sizing!
The Core Sheet Insulated does not currently have the adjustable drawstring feature like our other sheets. The 25" sheet will fit the 25x77 mattress perfectly, but please note that while it does work on the 25x72 it will be a loose fit.
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Introducing the Core Bed! — The all-new Core Bed is Zenbivy's simplest, softest, and most affordable backpacking bed. Without zippers or a complex convertible footbox, the Core Bed’s simple patent-pending Fast Footbox™ utilizes just one hook to quickly transform the footbox from "mummy mode" for maximum warmth to “wide mode” for maximum space. The proven draft-free clip system keeps things minimal and lightweight while the soft 50d Pongee liner and supple new 30d Nylon Taffeta shell provide maximum home-like comfort.
Includes the Core Quilt 25° Synthetic, Core Sheet Insulated, and a large mesh bag for long-term storage. Mattress and accessories sold separately.
Core Bed Features
Fast Footbox™
Without zippers or a complex convertible footbox, the Core Bed’s simple patent-pending Fast Footbox™ technology utilizes just one hook to quickly transform the footbox from "mummy mode" for maximum warmth to “wide mode” for maximum space.
Clip Closures
To keep things lightweight and minimal, the Core Bed uses our proven clip system to connect the backpacking quilt to the separate fitted sheet and ensure a draft-free night of sleep.
Large Insulated Hood
The sheet’s roomy integrated hood insulates your head and arms and keeps your pillow in place throughout the night. Our insulated Core Sheet uses synthetic insulation, rated to 25°F.
Soft, Durable Fabrics
With its legendary soft sheet-like 50d Pongee liner and a new amazingly supple and durable 30d Taffeta shell, the Core Bed features our softest fabrics yet!
The Kylie-curve™
The 3/4 length baffle-backed Kylie-curve™ drawstring comfortably seals in warmth around your shoulders but leaves the edges free to drape at your sides or tuck into the sheet’s hood to block drafts.
"Will the sheet fit my current mattress?"
Size Guide
Our sheets are designed to fit most standard size mattresses on the market—both rectangular AND tapered styles! They are available in 20", 25", and 30" widths. See our full size guide for specifics on sheet/mattress sizing.
What size Dry Sack do you need?
Shop Dry Sacks
Compression Dry Sacks are sold separately. You can expect your Light Bed (quilt + sheet) to compress down to about half the size of the Dry Sack itself.
We recommend the 15L Dry Sack for all sizes of the Core Bed 25° Synthetic
Looking to ditch some ounces?
Check out our uninsulated version of the Core Sheet! Ideal for warmer trips or combined with an insulated hooded jacket, the uninsulated Core Sheets start at just 7 ounces. Compatible with all Core Quilts.
$70.00
Pairing your Core Quilt with one of our Core Sheets allows you to fully "tuck in" when temperatures drop.
Customer Reviews
4.5 Based on 8 Reviews
Write a Review Filter Reviews:
JC
09/01/2023
jeff C.
United StatesGreat
When paired with a core quilt it’s the most comfortable sleeping system.
RD
08/25/2023
Rae D.
United StatesVery comfortable, but temperature rating is very over-rated.
Pros: ZenBivy's customer service was very helpful with my questions. The system itself is very comfortable and I have one quilt and two sizes in sheets, which easily fit my pre-existing sleeping pads. Con: It's not a 25 degree bag . To be honest, I did not buy it as a 25 degree bag, because I'm well aware that most gear manufacturers overstate this rating. However, I spent 10 days camping in the Tetons early this summer in a dry tent on level ground, on a sleeping pad with a 6+ Rvalue and wearing thermals. But without an extra light blanket on the inside of the system, I would have been very cold in temperatures not lower that 38-40F. So for me that's a fail to be advertising it as a 25 degree sleep system. I think most experienced campers and backpackers understand these issues, but it's the newbies I worry about and there is no way I'd recommend this to someone going into a colder situation. I would recommend it for summer backpacking or kayaking and colder car camping when you can bring some extra gear in order to stay warm. I'd buy it again and I'm very happy with it. I'm also happy I went into my purchase with realistic expectations and I wish ZenBivy would reconsider how they do their own temperature ratings.
09/06/2023
ZENBIVY
Hi Rae, We're so sorry to hear you were cold! We would love to help find a solution. Please send us an email at orders@zenbivy.com and we'll figure something out. -The Zenbivy Team
DP
08/02/2023
Debbi P.
United StatesZenbivy quilt
I haven’t used it yet; I’m just gearing up for a Fall section hike on the AT. Quilt definitely seems to fit the bill, but… I also ordered a mesh bag not knowing that it came in one. Also, it supposedly stuffs into the 7L bag, which I can’t make happen. Luckily, I had ordered elsewhere a 10L bag that it barely stuffs into. The compression ends I ordered? I can’t seem to make them work. Overall, I do feel I wasted some of my money.
BW
07/11/2023
Brad W.
United StatesBig&Tall Guy Rejoices: Film at 11
So far, so good! As a 6'7"/250 lbs side-sleeper, I've been camping in my 1980's era XL Hollofill 2 sleeping bag out of necessity, but it's always been snug. At various points over the years, I've tried upgrading, but everything available was too tight in the shoulders/hips, or my feet/head would get pushed together if I tried to stretch out. Finally decided to try the Zenbivy XL Core Synthetic 25 with the 30x80 sheet paired with the ALPS Mountaineering Nimble Insulated pad. Haven't been outside yet, but it's an absolute dream combo on the hardwood floor at my parent's house. (Curse you brother, for taking the bed! :) ) But the joke's on him, this is almost as good as a bed. Looking forward to seeing how it performs outdoors in a couple months at the next Scout campout.
PS
07/04/2023
Pavel S.
United StatesNice comfy setup
Good setup based on the fact that I've spent a number of nights sleeping in this combo and there was no glaring discomforts or things that made me regret my purchase. I'm still learning how to use the bivy and sheet combo. Overall it's good at maintaining comfortable temperature in the summer.