One solution that will allow you to still individually move your sides would be to use a flex top or solid Sleep Number sheet set. It will keep you from falling in the gap, but still allow movement. I have some customers who also use a flextop or solid topper or mattress, pad and sheet, however the more layers on top tomorrow awkward individual movement might be. The good thing is that with these solutions, you are not forcing more into the split, and as needs change, or as you figure out how to cuddle or have activities side to side they can be removed. Answer from Deleted User on reddit.com
Reddit
reddit.com › r/sleepnumber › split bed gap filler?
r/sleepnumber on Reddit: Split bed gap filler?
October 14, 2023 -
So I've had a king size split bed for awhile now. I like the individual control, however, I don't like that the split in the middle really gets in the way of cuddling and activities. Was wondering if anyone has recommendations as to what they use to fill in the gap from time to time aside from just a blanket or pillow
I really wish sleepnumber had a perfect formed foam cutout I guess
Top answer 1 of 6
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One solution that will allow you to still individually move your sides would be to use a flex top or solid Sleep Number sheet set. It will keep you from falling in the gap, but still allow movement. I have some customers who also use a flextop or solid topper or mattress, pad and sheet, however the more layers on top tomorrow awkward individual movement might be. The good thing is that with these solutions, you are not forcing more into the split, and as needs change, or as you figure out how to cuddle or have activities side to side they can be removed.
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Go on Amazon and look up something called a bed bridge. This has helped a ton of my customers and may be a good fit got you.
Amazon
amazon.ca › ECO-Layers-Bridge-Twin-King-Converter › dp › B082T396J7
ECO-Layers Bed Bridge Converter Kit - Twin to King Bed Connector - Mattress Extender Joiner Gap Filler - Split King Bed Connector : Amazon.ca: Home
ECO-Layers Bed Bridge Converter Kit - Twin to King Bed Connector - Mattress Extender Joiner Gap Filler - Split King Bed Connector : Amazon.ca: Home
ECO-Layers Bed Bridge Converter Kit - Twin to King Bed Connector - Mattress Extender Joiner Gap Filler - Split King Bed Connector : Amazon.ca: Home
Price $85.04
Videos
01:07
Watch If you have a split king, this bed bridge will fill the gap ...
Twin to King Bed Bridge,Split King Gap Filler for Adjustable ...
03:18
Split King Mattress Gap - Easy Fix - YouTube
03:42
HOW TO TURN A TWIN BED INTO KING // Mattress Converter - YouTube
08:54
How to Make Your Split King Bed - YouTube
01:25
CKI Create A King Mattress Connector - YouTube
Lowest Cost Mattress
lowestcostmattress.com › collections › adjustable beds & accessories › [bed bridge twin to king] split king gap filler for adjustable bed - mattress connector replaces a mattress gap filler and better bedder band. twin to king bed converter kit to join two twin beds
[Bed Bridge Twin to King] Split King Gap Filler for Adjustable Bed - Mattress Connector Replaces a Mattress Gap Filler and Better Bedder Band. Twin to King Bed Converter Kit to Join Two Twin Beds
[Bed Bridge Twin to King] Split King Gap Filler for Adjustable Bed - Mattress Connector Replaces a Mattress Gap Filler and Better Bedder Band. Twin to King Bed Converter Kit to Join Two Twin Beds
Brand: Bedbinder DeluxeColor: WhiteFeatures:
♥💓 Looking For A Bed Bridge That Prevent You From The Gap In The Middle Of Your Twin Bed, Right? 💓♥ This Bed Bridge of Bedbinder DeLuxe is all you need when you want to get rid of the your Bed Gap or Sliding Mattresses. This Twin Bed Connector does not only replace the Bed Gap Filler or Twin Gap Filler, but this Mattress Connector also works as a Bed Space Filler and can be used with or without a Better Bedder or a Topper
👑🛌 Over 75.000 Happy Customers In The USA 🛌👑 Having these Bed Straps for Mattress of Bedbinders, you don't need your Gap Filler
Price US$67.00
Casper Sleep
casper.com › home › dreamer's digest › dreamer's digest
How to Keep Split King Mattresses Together: 7 Tips | Casper Blog
August 28, 2024 - A bed bridge is precisely what it sounds like: an accessory, typically made of foam, that bridges the gap between the two twin segments of your split king.
Amazon
amazon.ca › Bridge-Twin-King-Attached-Sheet › dp › B0CS1YS8Z5
2-in-1 Bed Bridge Twin to King with Attached Sheet - Twin Bed Connector - Split King Gap Filer - Mattress Wedge Gap Filler - Twin to King Bed Converter - Mattress Gap Filler King Bed (Patent Pending) : Amazon.ca: Home
2-in-1 Bed Bridge Twin to King with Attached Sheet - Twin Bed Connector - Split King Gap Filer - Mattress Wedge Gap Filler - Twin to King Bed Converter - Mattress Gap Filler King Bed (Patent Pending) : Amazon.ca: Home
2-in-1 Bed Bridge Twin to King with Attached Sheet - Twin Bed Connector - Split King Gap Filer - Mattress Wedge Gap Filler - Twin to King Bed Converter - Mattress Gap Filler King Bed (Patent Pending) : Amazon.ca: Home
Price $92.99
Amazon
amazon.ca › Bridge-Twin-Joiner-Sheet-Clips › dp › B08XWRZ9VH
The Samuel Bed Bridge Twin to King Connector Kit with 4 Sheet Clips, 10 Inch Wide Bed Gap Filler, Adjustable Mattress Connector with Straps for Guest, Split King Connector for Family Room (Navy Blue) : Amazon.ca: Home
The Samuel Bed Bridge Twin to King Connector Kit with 4 Sheet Clips, 10 Inch Wide Bed Gap Filler, Adjustable Mattress Connector with Straps for Guest, Split King Connector for Family Room (Navy Blue) : Amazon.ca: Home
The Samuel Bed Bridge Twin to King Connector Kit with 4 Sheet Clips, 10 Inch Wide Bed Gap Filler, Adjustable Mattress Connector with Straps for Guest, Split King Connector for Family Room (Navy Blue) : Amazon.ca: Home
Price $54.56
Foam Factory
foambymail.com › product › foam-bed-bridge.html
Poly Foam Bed Bridge | Foam Factory, Inc.
The thickness of the foam bed bridge is 3". This tapers down to 1/4" on both the left and right of the foam bed bridge. The part of the product that drops between the mattresses is about 1-1/4" thick.
Saatva
saatva.com › home › 6 ways to keep a split king mattress together
How to Keep a Split King Mattress Together | Saatva
You can install a mattress bridge, add a headboard, secure and connect the legs of the frames to keep the foundation steadfast, put non-slip mattress pads between the mattress and the foundation, or use a mattress topper.
Reddit
reddit.com › r/sleepnumber › best bridge/gap filler for climate360 split king
r/sleepnumber on Reddit: Best bridge/gap filler for Climate360 Split King
June 4, 2024 -
I want to link the two sides of the adjustable base and use a bed-bridge under a king mattress pad to make the split king more like a king. Any suggestions on the best bridge/gap filler to get? The angled edges of the two mattresses seem to yield a bigger gap at the top than what I see most bed bridges advertised for.
Top answer 1 of 2
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I wish one would work! I bought a thing that goes between with a strap to pull around to get them closer. Garbage. Now I just stuff pillows in the middle. It really sucks that there's no way to make it feel like an actual king. I would never do split king again, but now I'm stuck with it. If you find something that works, please post!
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If you want to sync both sides to move together you just need to use a king fitted sheet. In my experience anything you put in the gap will force it wider over time. If you want to spend for a king size Climate mattress pad (breathable) that would help, too. Ordinarily I’d suggest a king topper pad to eliminate the gap but not on a Climate 360 since it would black the airflow.
Wayfair
wayfair.com › keyword.php
Split King Bed Gap Filler | Wayfair
Designed from breathable fabric and high-density foam, this Mattress pad to bridge gap spans 75 inches in length and 8 inches in width,with 2.1 inches for gap filler, ensuring a perfect connection between mattresses.
eBay
ebay.com › home & garden › bedding › mattress pads & toppers
9” Wide Bed Bridge Foam Padded Split King Gap Filler for Adjustable Bed w/Strap | eBay
9” Wide Bed Bridge Foam Padded Split King Gap Filler for Adjustable Bed w/Strap
This bed gap filler is the perfect solution for filling the gap between 2 beds, easily transforming 2 twin beds into one seamless king bed. The T-shape wedge allows it to fit firmly into the gap, giving you enough support and comfort.
Price US$34.19
Amazon
amazon.ca › Bed-Bridge-Twin-King-Converter-Twin › dp › B0CF58NDYX
Bed Bridge-Twin to King Converter kit,Adjustable Mattress Bed Connector,Split King Gap Filler Twin Bed Connector to King Making,for Stayover,Family Room and Vacation Rentals : Amazon.ca: Home
Easily fill the gap in your split king adjustable or split queen adjustable bed, combine two twin or twin xl beds into a king or join any two beds to make a larger bed using this bed bridge.
Amazon
amazon.ca › Bridge-Twin-Split-Filler-Adjustable › dp › B07LDV45RT
[Bed Bridge Twin to King] Split King Gap Filler for Adjustable Bed - Mattress Connector Replaces a Mattress Gap Filler and Better Bedder Band. Twin to King Bed Converter Kit to Join Two Twin Beds : Amazon.ca: Home
Your mattresses will be so close together that there is no twin gap filler or Betterbedder needed to make a twin to king bed. Thanks to this Bed straps for mattress, you create Family beds in minutes. This is the best bed bridge and split king gap filler for adjustable bed, and it is installed in minutes.
Amazon
amazon.ca › EPHEDORA-Fitted-Attached-Converter-Adjustable › dp › B0D6W5V383
EPHEDORA 3-in-1 Fitted Sheet Attached Bed Bridge Twin (XL) to King Converter Kit with Sheet Strap Set | Split King Gap Filler for Adjustable Bed | White : Amazon.ca: Home
EPHEDORA 3-in-1 Fitted Sheet Attached Bed Bridge Twin (XL) to King Converter Kit with Sheet Strap Set | Split King Gap Filler for Adjustable Bed | White : Amazon.ca: Home
EPHEDORA 3-in-1 Fitted Sheet Attached Bed Bridge Twin (XL) to King Converter Kit with Sheet Strap Set | Split King Gap Filler for Adjustable Bed | White : Amazon.ca: Home
Price $104.99
Bedbinders
bedbinders.com › home
Home - Bedbinders
May 2, 2024 - Yes, it’s very adaptable! The Bedbinder can comfortably bridge mattresses even if they differ in height, keeping them snugly together.
vekkia
vekkia.com › home › vekkia split king gap filler for adjustable bed,twin to king bed converter kit,bed bridge twin to king,mattress connector with washable cover,for guests stayovers,family room
Vekkia
Premium Quality Bed Bridge Pad- Sleep comfortable with the bed converter kit that consists of a 10 inch wide& 75inch long, high quality mattress bridge and storage bag with installation manual. USING WIHT ASJUSTABLE BEDS: Works only if the beds are in same or similar position. Detachable Bed Gap Filler - The cushion cover is removable with zipper design and non-pilling, as well as hand or machine washable, easy to put on and take off for change & wash. Portable, Easy Storage - Perfect for guest rooms, B&Bs, guesthouses and vacation rentals. Make a twin to king bed in minutes.
Amerisleep
amerisleep.com › blog › mattress guides › how to keep a split king mattress together
How to Keep a Split King Mattress Together - Amerisleep
November 13, 2025 - Use Physical Connectors and Non-slip Solutions: The most effective methods for preventing mattress gaps include using non-slip pads between the mattresses and foundation, mattress connector straps that physically join the mattresses together, and bed bridges or gap fillers that create a smooth transition between surfaces. Strengthen Your Bed Foundation: Regularly check and tighten all bed frame components, consider adding a sturdy headboard connected directly to the frame, and choose a foundation specifically designed for split king setups with connector hardware or locking mechanisms.
Amazon
amazon.ca › Split-King-Gap-Filler-Spring › dp › B07L4ZTW8G
Split King Gap Filler for Box Spring Bed - Bed Bridge Wedge for King and Queen - Bed Straps for Mattress - Universal Twin to King Bed Converter Kit : Amazon.ca: Home
ENITYA Split King Gap Filler for Adjustable Bed,Bed Bridge-Twin to King Converter to King Making,Adjustable Mattress Bed Connector,for Stayover,Family Room and Vacation Rentals(75" L x 10" W)
Walmart
walmart.com › home
Split King Gap Filler Adjustable Bed
$14.44Hemoton Bed Bridge for Split King Adjustable Bed Twin Converter Kit Mattress Gap Filler and Bed Extender Mattress Straps and Bed Sheet Grippers White · 10"X76" Bed Bridge Twin to King Converter, Split King Gap Filler for Adjustable Bed Mattress Connector with Washable Cover Close The Gap(76in10in)
Wayfair
wayfair.com › keyword.php
Split King Bed Bridge | Wayfair
Turn two mattresses into one luxurious king with this smart bed bridge converter. Designed for easy setup and stable connection, it ensures guests enjoy a seamless sleep experience.