Opera beds. The Gel 1000 is a super comfortable layered mattress with a firmness rating of 2/5 (soft to medium). It is a hybrid construction with 1000 pocket springs encapsulated in a high-density foam surround and three surface layers of memory and gel-infused foams. This construction provides the perfect balance of support and responsiveness with soft comfort and body heat control. The mattress has useful carry handles and the ventilated top cover ensures airflow for additional temperature regulation.