Jay-Be Benchmark Open-Coil Double mattresses include state-of-the-art, sustainable sleep technology. Thanks to the combination of its two premium comfort layers and deep e-Spring core, this mattress offers the most adaptive support and amazing pressure relief. While the incredibly fine Micro e-Pocket springs adjust to even the tiniest movements of your body, the groundbreaking Memory e-Fibre, an environmentally friendly substitute for memory foam, provides pressure-relieving support throughout the night.