Dual Core mattresses, also known as split tension of zip \u0026 link, are all different terms for what is basically a system that allows you and your partner to sleep on different tensions within the same mattress. See, mattress firmness is a critical part of both comfort and support and what is suitable for one person is oftentimes unsuitable for another. It’s one of the main reasons so many people buy medium firmness mattresses, it’s simply a compromise for both parties. What if, however, you were able to both sleep in the same bed and on the same mattress, but with different layers of support that gave completely different feels to each mattress side. The result is what you see below, a carefully curated list of some of the best split tension and dual core mattresses, allowing both parties to truly get what they want from a mattress without the compromise. With each half of the mattress customisable to your desired firmness, both parties get to sleep in total comfort. With true versatility, couples across the UK no longer have to pick between a happy partner and bad neck and joint pain. Get the best of both worlds with your next dual core zip and link split tension mattress.