When paired with our Saatva Adjustable Base Plus, our Upper-Flex size options give each sleeper the freedom to raise the head of the bed independently and raise the foot of bed in unison.
Shop the Saatva Adjustable Base Plus with the Upper-Flex option here: Saatva Adjustable Base Plus
The split on an Upper-Flex measures 30'' down from the head.
NOTE: The Upper-Flex is different from split king, which is two separate twin XLs placed side by side. A Split King or Split Cal King Solaire gives each sleeper the freedom to raise the head and the foot of the mattress independently, making it our most customizable mattress.