Every Helix mattress is handmade by skilled professionals in our Phoenix, Arizona facility. By owning and operating the facility where our mattresses are made, we are able to provide the highest quality materials and American-made craftsmanship each and every time. The Twilight is Helix's firm memory foam mattress featuring a dense foam feel that supports spinal alignment and provides pressure relief at your hips and shoulders. This mattress combines 3 layers of high-density foam with hundreds of individually wrapped steel coils and features reinforced edge support to provide excellent motion isolation and durability. The Twilight mattress is made with our GlacioTex Cooling Cover, powered by ultimate cooling tech that instantly draws heat away. It features excellent contouring memory foam to provide pressure relief at your hips and shoulders with maximum comfort. The Twilight mattress is made with a hybrid design, including hundreds of individually wrapped steel coils and reinforced side edge support to provide excellent motion isolation and durability.