The Most Versatile Mattress Material
Foam might not be the flashiest material in the mattress world, but it’s easily one of the most important. In fact, when it comes to comfort, pressure relief, and support, foam does more of the work than you might expect. Whether it’s the surface you sink into at the end of a long day or the firm base that supports all the mattress layers, foam is essential in creating a restful sleep experience.
At Therapedic, foam is a key component in both all-foam and hybrid mattress designs. When thoughtfully selected and carefully layered, foam can create a sleep surface that’s comfortable, breathable, and built to last. It adapts to your body, minimizes motion transfer and delivers the support you need to wake up feeling refreshed. All of our foams are CertiPUR-US® certified, meaning they’re made without ozone depleters, polybrominated diphenyl ether flame retardants, mercury, lead or other heavy metals, formaldehyde, or regulated phthalates. That means every layer is not only designed for performance, but also for peace of mind.
Understanding Foam Layers
Foam in a mattress usually starts with a base layer which is the foundation or “core” of the mattress. The density of this layer, along with other factors such as resilience and permeability, determines the overall stability and structure of the mattress. A base layer foam with a higher density will typically be more durable and retain its shape better over time. Specialty foams made with airflow channels in this layer, like those used in Therapedic’s Agility line, can improve breathability. The addition of foam side walls as part of the mattress can also increase side to side comfort and minimize movement disturbance.
Above the base layer is a transitional layer. As the name suggests, it acts as a buffer between the comfort layer above and the firmer support layer below. This layer of foam may have a higher resilience in order to keep your spine aligned and your body from sinking too deeply into the bed. This layer also plays a crucial role in helping to reduce stiffness and soreness in the morning.
The top layer of the mattress is usually described as the comfort layer. This is often where gel memory foam is found. Gel foam gently contours to your body, easing pressure in sensitive areas while helping to regulate temperature throughout the night. Another example of a comfort layer foam is Therapedic’s copper-infused memory foam, found in the Immunity line. Copper is believed to assist with wellness benefits such as boosting the immune system, increasing circulation and reducing inflammation.
Where Foam Really Shines: Across Mattress Types
Foam plays a key role in both all-foam and hybrid designs throughout the Therapedic collection. Models like the Vitality 8-inch mattress combine gel memory foam, transition foam, and support foam to deliver firm, pressure-relieving comfort—ideal for back and stomach sleepers.
The 12-inch model adds breathable dual foam layers for a medium-firm feel, better temperature regulation and added durability, contouring support and motion isolation.
For advanced foam performance tailored to specific needs, the Agility and Immunity lines offer standout options. Agility combines responsive foam with hybrid construction for a more buoyant, active feel. Immunity focuses on restorative comfort, using specialty foams to support wellness, cooling, and cleaner sleep.
Thoughtful Construction Using Foam Matters
Mattress design is not just about layering different types of foam together; it’s about using the right materials in the right way to support how you actually sleep. Whether it’s part of an all-foam model or paired with coils in a hybrid, foam plays a lead role in shaping how your mattress performs to help ensure you get the best night’s sleep.