How big is the cushion?

It is about 38 by 38 inches, which covers a full seat and back. Check your seat dimensions before buying, since it is larger than a typical small heating pad.

How many heat settings does it have?

Three. You can switch between low, medium and high warmth depending on how cold it is.

Does it need to be plugged in?

The listing describes a heating function and plastic construction but no battery, so expect it to run from a power source. Confirm the plug type and cord length with the seller before buying.

Can I use it on a couch or office chair?

Yes. The flat 38-inch square shape suits a couch, desk chair or car seat, as long as it is near an outlet.

The listing does not detail the contents. Ask the seller whether a power adapter or cord is included before ordering.

Is the Pointex Thaw worth it?

It offers three heat levels and broad 38-inch coverage in one cushion. With only one new listing there is no cheaper alternative to compare, so weigh it against similar three-level heated seat cushions on features and build.