The iSeries Collection of beds, made by Serta Canada, combines the great support of individually wrapped coils along with the pressure relief and comfort of a Memory Foam bed. These Hybrid mattresses give you the best of both! You'll enjoy all of the benefits of sleeping on Gel Memory Foam, for a cool nights rest and the feel of the more traditional innerspring bed. Additionally, this collection features Cool Twist™ Gel Infused Foam for the ultimate in luxury and comfort. These mattresses are designed to help you get a comfortable, regenerating nights rest.