Does this heated mattress pad fit a queen bed?

Yes. It is sized for a queen mattress at 60 by 80 inches and is rectangular, so it lays flat across the top.

Can I wash it in a machine?

Yes, the pad is machine washable. Unplug it and detach the controller and cord before washing, and follow the care label for drying.

Does it have dual controls for two sleepers?

No. It is a single-zone pad, so both sides of the bed get the same heat setting. Couples who want separate temperatures should look at dual-control pads.

Will it work under a mattress protector or fitted sheet?

Yes. It is thin enough to sit under a fitted sheet, and most owners place it directly on the mattress with the sheet over it.

Is it safe to leave on all night?

Follow the manufacturer's instructions. Most heated pads are designed for all-night use on lower settings, but check the label and avoid piling bedding on top of the controller.

Does it have an automatic shutoff?

Check the controller for a timer or auto-off feature. Many heated pads shut off after a set number of hours, and the model's controls vary by version.