2-in-1 Bed Bridge Twin to King with Attached Sheet - Twin Bed Connector to Make a King - Split King Gap Filer - Mattress Wedge Gap Filler - Twin to King Bed Converter - Mattress Gap Filler King Bed

It makes two of my beds into one! It does kind of leave a... bump? But it's more visible than it is tactile. I don't feel it while I sleep, but I also put another thick bed cover on top, which is helping. It can be a bit hard to get it into place if it winds up getting out of it while setting up the bed, got to separate the beds and shimmy them back in and wonder if it's even working at all until you go "Good enough."

Great product! It works great, a little bump but nothing too excessive. I would purchase again.

Very comfortable and is easy to fit

I am so pleased with this product. This has allowed me to use the twin mattress I love and the very different twin mattress my husband loves with no big chasm between the mattresses at all now! Fits nice and snug! And the bed looks great when it is made. Definite recommend!

I use this for my vacation rental cabin where we normally have 2 twin XL single beds. What I find works is prior to placing the wedge, I used 4 Velcro straps along both beds’ bottom rails to secure the 2 beds together (1 near head, 2 in middle, and 1 near foot). I then placed the wedge between the 2 mattresses and used 4 more of the same Velcro straps to secure the wedge ( only at the head and foot) and did not use the provided wraparound system that is included. Finally, I added a fitted king mattress pad that keeps the 2 mattresses from sliding apart. Then make the king bed as usual. Takes about 30 minutes from start to finish. Also, I leave the 2 twin XL singles completely made, so after removing the king bedding and mattress pad, the twin beds can be separated and straightened up fairly quickly for housekeeping. You cannot tell the twin beds already have bedding on them once everything is wrapped under the mattress pad. Genius!