The Casper Original Hybrid Mattress features four layers of premium materials, combining memory foam comfort layers with a responsive flex coils base. This Original Hybrid mattress construction is what sets it apart from both standard all foam mattress options and less sophisticated hybrid mattresses. Here’s what’s inside:

1. QuickCool™ Cooling Mattress Cover (Top Layer)

The top layer mattress cover features cool-to-the-touch fibres and breathable construction that immediately starts drawing heat away from the body. This top layer is the first line of temperature regulation in the Casper Original Hybrid’s multi-stage cooling system, and contributes meaningfully to the comfortable temperature sleeping environment the Casper original delivers.

2. AirScape® Cooling Foam with Phase Change Material (Comfort Layer)

The second comfort layer combines AirScape Technology and Phase Change Material to circulate air and pull heat away from your body throughout the night. The AirScape Technology features perforations through the foam that create active airflow — a significant advantage over the sealed foam construction in an all foam mattress competitor. This comfort layer is infused with premium memory foam properties and Casper signature foam technology, delivering both relieve pressure benefits and sustained comfortable temperature management. For hot sleepers, this AirScape Technology layer is particularly impactful.

3. Zoned Support™ Pressure-Relieving Memory Foam (Comfort Layer)

This memory foam comfort layer uses Zoned Support™ to provide targeted pressure relief where the body needs it most. The zoned support architecture delivers softer foam resistance under the shoulders and firmer resistance under the hips and lower back — providing lumbar support and keeping the spine aligned regardless of sleeping positions. These two layers of comfort layers working above the coils is what gives the Casper Original Hybrid mattress its reputation for targeted pressure relief and pain alleviation. The premium memory foam density in this layer also ensures reduced motion transfer at the surface level.

4. Flex Coil Supportive Pocketed Springs (Layer of Pocketed Coils)

The layer of pocketed coils — Casper’s flex coils individually pocketed springs — are the structural backbone of the Casper Original Hybrid. These pocketed coils respond independently to body weight and movement, providing more bounce and responsiveness than any foam mattress can deliver. The flex coils also create significant airflow through the mattress core, enhancing the AirScape Technology cooling effect from above. The layer of pocketed springs delivers reduced motion transfer at the base level, working in concert with the memory foam comfort layers above for comprehensive motion isolation.

5. ProSupport Foam with Casper Edge Support (Support Layer)

The support layer base is ProSupport Foam — a high-density foam foundation that prevents sinking and sagging over the mattress’s lifetime. The ProSupport foam also incorporates Casper Edge Support — a firmer border around the perimeter that provides better edge support and makes it easy to easily get in and out of. This Casper edge support system is engineered into the ProSupport foam perimeter to ensure long-lasting edge support performance across all sleeping positions and body weights.