The short answer is no, not necessarily. Setting up your Leesa with a bed frame is entirely your choice.
Bed frames are commonly used to position a mattress and box foundation so that the bed stays in place and to raise the mattress off of the floor. Or when setting up a headboard or canopy as both require a bed frame.
We do strongly recommend placing your Leesa mattress on a stable, rigid base whether that's a traditional metal frame with foundation, a platform bed or a slatted bed.
Considering an adjustable base? Good news! The Leesa mattress is ideal for adjustable beds because of the way the foam contours to movement.