A human mattress is basically a Talita chair.
Transcript
Talita removes her shoes in Gillie and Idrisah's apartment, looking apprehensively at Gillie, who is standing up and signing at one of her scroll monitors.
Talita: Gillie’s still working?
Idrisah: Don't worry, we're out of frame.
Idrisah pats the couch next to her, where she is sitting with her laptop.
Idrisah: I got the spare mattress out for you. Sit!
Talita sits comfortably down on the mattress with a fitted white sheet that has been placed on the floor and leans an elbow on the couch, handing Idrisah her tablet.
Idrisah: Did you get the specs?
Talita: Well, mostly. I had to do a lot of… estimating.