Queen Gel Memory Foam Mattress Topper 4 Inch

Gel memory foam mattress toppers add a cooling, pressure-relieving layer to your existing bed. They're popular with hot sleepers, anyone with back pain, and budget shoppers who want mattress-like comfort without replacing the whole bed. Key specs to compare include thickness (2–4 inches is common), size, density, cooling gel infusion, ventilation, and brand. Higher density foam typically lasts longer. For the best value, match thickness to your needs—2 inches suits minor comfort upgrades, while 3–4 inches offers deeper cushioning. This ventilated 2-inch topper is a great entry-level pick, while a high-density 3-inch Cal King option works well for larger beds needing premium support.