About the Mattress — Twilight is the best Sweet Night mattress, the hybrid embodiment of all our goals and promises. Its soft and plushy knitted cotton cover makes you feel like sleeping on a fluffy cloud. The gel-infused memory foam adjusts to your body and supports it while the comfort ventilated foam dissipates heat and keeps you cool all night long. We used independently-wrapped tempered steel coils to ensure motion isolation, and a support layer of high-density foam to prevent sagging and rolling. With a firmness level of 6.5/10, this mattress delivers the best sleep experience, only available in much more expensive luxury mattresses. Spotlight Top Features: Combined Innerspring and Foam Support — this innerspring mattress combines the traditional independently coil with the gel memory foam for an optimal sleep experience. Cooling Effect & Heat Dissipation — gel infused memory foam slowly adjusts to your body weight & temperature for sleep cool & pressure relief. Excellent Motion Isolation For Any Sleep Position — individually wrapped innerspring moves independently to prevent motion transfer between partners. Pressure Relieving Comfort — the comfort foam layers provide cushioning, relieve painful pressure points on the body, and serve as protective buffers. Two thickness options: 10-inch & 12-inch. Multiple mattress sizes to choose from: Full, Queen, King. Body pressure and back pain relief. Motion isolation and coolness during hot summer nights. 100-days sleep trial. 10-year warranty. Comfort in all sleeping positions. Compatibility with all bed sizes, frames, and platforms. Conveniently compressed packaging. Free, contactless delivery across the U.S. Certified Hybrid Mattress — Even Balance of Support and Comfort: Cooling & soft cover, knitted fabric, air-flow high density foam, gel memory foam, wrapped pocketed steel coils. Conforms to your body shape: pressure relief, head-to-toe comfort, perfect spinal alignment. Sweet Night Mattress Fits All Frames. Smartly Shipped — Easy Carry & Set Up.