Designed and built in Canada, the Serta Spectrum 8 Inch Medium Gel Memory Foam Mattress is the perfect option for those who want convenience but aren't willing to sacrifice on comfort. The top layer has Cool Twist Gel Memory Foam which is a breathable foam that has cooling gel infused directly into it. This promotes airflow and heat dissipation to help keep you at the ideal sleeping temperature. The bottom layer has the SertaPure Foam Core which is a support system designed for all-over body support. This helps to provide long-lasting comfort for a restful, restorative sleep. Foams are Certi-PUR US certified and do not contain any harmful chemicals or materials. The mattress comes conveniently packaged in a box for easy transport and has a 10 year limited warranty.