The Plank Firm Topper does the opposite of most toppers: it makes a mattress firmer, not softer. If your bed has gone too soft, or you prefer a firm surface and your mattress no longer delivers one, this rebuilds the support without replacing the mattress.

It suits stomach sleepers and anyone who wakes with lower back soreness on a bed that lets the hips sink. Eleven sizes including Short Full, Full XL, Olympic Queen, RV King, and Short King, so it fits specialty and RV frames as well as standard beds.