Our open coil spring mattress features the traditional Bonnell coil spring system which are hourglass-shaped metal coils fixed together to form one entire spring unit. The spring system are also encased in high-density support foam for more comfort and longevity. Spring mattresses are perfect for all types of bed frames, and are great value for money. Single spring mattresses are ideal for kid’s beds, bunk beds, and guest beds to keep things simple and cheap. Our mattresses are handmade right here in the UK and come vacuum rolled for easy assembly.