Serta ThermaGel Cooling Memory Foam Topper, 3-Inch, King – Made in USA

Cool, adaptive comfort for every night

Upgrade your sleep surface with the Serta ThermaGel Cooling, Pressure-Relieving Memory Foam Mattress Topper. At 3 inches thick, this topper sits atop your existing mattress, offering a plush, supportive layer that adapts to your body shape while staying breathable. The result is a sleep surface that can feel both cradling and refreshing, all night long.

Key benefits at a glance

• Breathable gel-infused memory foam for cooling comfort and adaptive support
• ThermaGel particles help draw heat away from the body for a cooler sleep surface
• Contour-aware design that conforms to your body's natural shape for targeted support
• Adds a layer of comfort and can help extend the life of your existing mattress
• Made in the USA with quality materials for lasting durability

Who benefits from a topper like this?

Hot sleepers, couples with differing temperature preferences, side and back sleepers, and anyone looking to refresh an older mattress may notice a more balanced feel. Because it sits on top of virtually any mattress, it can create a more breathable, cushioned surface without a full replacement.

Real-life use cases

• Nighttime cooling for warmer nights, helping you stay asleep longer without overheating
• A contoured, pressure-point–friendly surface that supports joints and spinal alignment
• A refreshed feel that can enhance comfort during lounging or reading in bed

Materials and care

The topper uses gel-infused memory foam to balance softness, support, and airflow. As with any foam product, maintain good room airflow and follow standard care guidelines to preserve performance over time. Made in the USA, it emphasizes durability and quality craftsmanship throughout the design.