Achieve optimal rest with the Active 10-inch Bonnell spring mattress. Featuring an open coil 13.5 gauge bonnell system combined with luxury fillings to provide rejuvenating sleep right out the box. Comfort Rating: Medium . The Active 10-inch (25cm) mattress offers a medium comfort level, providing a balanced combination of support and cushioning. This makes it a versatile choice suitable for most sleepers, ensuring a restful night's sleep. Mattress Fabric: Stretch Knit Quilted Fabric - The top layer of the Active mattress features high-quality stretch knit quilted fabric, known for its softness, breathability, and stretch. This fabric ensures a cosy and comfortable sleeping surface. Support System: Open Coil Bonnell Springs - The Active mattress features a 13.5 gauge open coil Bonnell spring system. This traditional design ensures balanced support and durability. Mattress Surface: Tight Top - The Active mattress has a tight top surface, providing a firm and smooth sleeping area. This design ensures the layers stay securely in place, preventing them from shifting or bunching over time. Designed as a non-turnable mattress, the Active has a designated top and bottom. The top side provides the sleeping surface with all the padding and support, while the bottom side features a non-slip material to keep the mattress securely in place on your bed. Ideal for Various Bed Types: Perfect for a variety of sleeping arrangements, including guest rooms and children's beds. Roll Packed: Conveniently roll packed for easy transportation and setup, making it a practical choice for any home. Made In the UK. - Comfort Beds Active 10 Inch Gel Memory Sprung Mattress in Grey - Size: Small Double