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
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
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.
Videos
01:07
Watch If you have a split king, this bed bridge will fill the gap ...
04:35
Best Split King Adjustable Bases - Best Bed Picks Worth The ...
03:18
Split King Mattress Gap - Easy Fix - YouTube
06:57
Best Split King Mattress 2025 - My Top 6 Picks! - YouTube
05:44
Best Adjustable Beds For Seniors - Our Top 5 Adjustable Bed Picks!
03:59
Split King Mattress Concerns - Is It The Right Bed Size For You??
Can I use a split king on a regular king bed frame?
Yes, you can use a split king on a regular king bed frame as long as the frame has proper center support. The dimensions of a split king (two twin XL mattresses) match exactly with a standard king frame.
However, regular king frames may not have features designed to prevent mattress separation. For the best results, add non-slip pads between the mattresses and frame, and consider using mattress connector straps for extra stability.
amerisleep.com
amerisleep.com › blog › mattress guides › how to keep a split king mattress together
How to Keep a Split King Mattress Together - Amerisleep
Can I use regular king sheets on my split king mattress?
Regular king sheets can work on a split king mattress, but they're not ideal for preventing gaps. Standard king fitted sheets may not have enough elastic tension to keep both mattresses firmly together.
Instead, look for split king sheet sets specifically designed with features like center connectors or extra-strong elastic. If you do use regular king sheets, make sure they have deep pockets and strong elastic that can grip both mattresses securely.
amerisleep.com
amerisleep.com › blog › mattress guides › how to keep a split king mattress together
How to Keep a Split King Mattress Together - Amerisleep
Will a mattress topper really help keep my split king mattresses together?
Yes, a mattress topper can significantly help keep your split king mattresses together. A single king-sized topper creates a unified surface across both mattresses and helps bridge the gap between them.
The weight of the topper adds stability that prevents the mattresses from shifting apart during the night. For best results, choose a topper that's at least 2 inches thick and made of memory foam or latex that holds its shape well.
amerisleep.com
amerisleep.com › blog › mattress guides › how to keep a split king mattress together
How to Keep a Split King Mattress Together - Amerisleep
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 5, 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
2
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!
2 of 2
1
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.
eBay
ebay.com › home & garden › furniture › beds & headboards › beds & bed frames
Split King Gap Filler for Adjustable Beds – Bed Bridge Twin to King Bed Converte | eBay
Split King Gap Filler for Adjustable Beds – Bed Bridge Twin to King Bed Converte
TURN TWO BEDS INTO ONE IN MINUTES ... sleepers. Our split king gap filler for adjustable beds locks mattresses in place so you can enjoy uninterrupted, united sleep....
Price US$53.99
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.
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
2
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.
2 of 6
2
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.
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.
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)
Amazon
amazon.com › Vekkia-Bridge-Twin-King-Converter › dp › B0C819BQ9Y
Amazon.com: 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(75in×10in) : Home & Kitchen
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.
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 - Quality bedding doesn’t just feel cozier — it also lasts longer. When it comes to fitted sheets, keep an eye out for those designed specifically for split king mattresses. These promise a snug fit and less budging while you sleep. Adjustable bed frames can optimize the advantages of having a split king mattress.
Walmart
walmart.com › home
Split King Gap Filler Adjustable Bed
From $51.00Split 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(75in×10in) Johnear Bed Bridge Connector Twin to King Bed Converter kit - Split King Gap Filler for Adjustable Bed - Twin and Twin XL Bed Adjustable Mattress Connector for Bed to Make King - Mattress Bridge
Sleepopolis
sleepopolis.com › home › sleep product reviews › best mattress joiners
Best Mattress Joiners (2026) | Sleepopolis
April 3, 2023 - This all-in-one conversion kit gives you everything you need to join your mattress in one handy, affordable package. Featuring a bed bridge, a 33-foot long strap and a storage case, you’re able to not only join two twin beds to make a king, but even two queen-sized mattresses for an even larger sleeping area.
GhostBed®
ghostbed.com › pages › problems-with-split-king-adjustable-beds
4 Problems with Split Kings (& How to Solve Them) | GhostBed®
Move to the foot of the bed and pull the sheet over the bottom corners. Select the “Flat Position” button on your remote and watch as the GhostGrip elastic band helps pull everything into place. ... Crafted with breathable Supima cotton and eco-friendly TENCEL™, our split king sheet set includes everything you need for comfortable sleep. Shop Now · We understand that price is a concern for many people when buying an adjustable bed base.
Amazon
amazon.ca › Bedbinders-Connector-personal-mattresses-Mattress › dp › B07GQ4RSY5
Bedbinder Deluxe Bed Gap Filler - Seamless King-Size Conversion
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 | White198
Ergomotion
shop.ergomotion.com › home › blog › 5 problems with split king adjustable beds [& how to fix them]
5 Problems with Split King Adjustable Beds [& How to Fix Them] - Ergomotion
April 12, 2023 - For example, the ErgoSportive king-size smart bed has a LED-lit headboard (with a sunrise/sunset feature) that keeps its two sides from sliding apart. Alternatively, you could use headboard brackets to attach a headboard to your split king bed. Another solution is to try a bed bridge, which creates a bridge between the two mattresses.