Features superior performance polyester filling that is manufactured from a highly sophisticated blend of three polyester fibres, including an advanced elastomeric binder fibre. Thereby providing exceptional comfort, support, and recovery. Free from FR chemicals as the polyester used in this mattress is inherently flame retardant. With sustainability at the forefront the polyester within this mattress is 100% recyclable at the end of life and can be upcycled into an alternative product. The sophisticated and refined spiral crimped coarse and fine fibres, are engineered to provide support and recovery. The Sareer Blackthorn is rigorously tested to show outstanding performance and durability, retaining its comfort and support for many years. The manufacturing process of this mattress enables us to offer maximum spinal support and eliminates rolling together so that you and your partner are able to enjoy a restful night’s sleep. Adding a Gel layer to this mattress provides a cooling bounce back feel instead of the sink in feeling that the traditional memory foam mattress provides.