Is the HealthWise Deluxe big enough for a full back?

Yes. At 12 x 24 inches it covers most of an adult back and can wrap around a shoulder or knee. It is larger than the common 12 x 15 inch pads.

Does it have a moist-heat option?

Yes. A moist-heat setting works with a dampened cover or sponge to add humidity to the heat. Follow the instructions so the pad does not get soaked.

How many heat settings does it have?

Four. The dial runs from low to high, and the pad shuts off automatically after a set period.

Can the cover be washed?

Yes. The fabric cover is removable and machine washable. Unplug the pad and remove the electrical parts first, and let everything dry fully before use.

Is it safe to fall asleep on?

It has an automatic shutoff, but the maker advises against sleeping on a heating pad. Use it for short sessions and turn it off before bed.

How does it compare with a wrap-style heating pad?

This pad is larger and lays flat, so it covers more area but does not stay on a moving joint as well. A wrap pad is better for knees and shoulders you move around.