How firm is it once inflated?

Firmness depends on how much air you add. Inflate it fully for a rigid wedge, or leave some air out for a softer, more giving surface. The vinyl core is built to hold up to 300 lb.

Yes. It deflates and packs flat, so it takes up little room in a drawer or bag between uses. That is its main advantage over a fixed foam wedge.

Does the surface stay in place?

The velvety coating is non-slip, which helps it grip the surface beneath it and gives a softer feel than bare vinyl. The two side handles help you hold it steady while repositioning.

Wipe the vinyl and velvety coating with a damp cloth and mild soap, then let it dry fully before deflating and storing. Avoid sharp objects near the seams.

The inflatable positioner itself. You supply the air, so check whether you need a pump, since inflating by mouth takes longer.

Couples who want adjustable support angles without storing a bulky foam shape. It suits small spaces and travel, but people who want a firm, always-ready wedge may prefer foam.