This fantastic airsprung quattro spring mattress is ideal for people who are looking for a slightly softer feel this affordable mattress features open coil sprung system to provide an extreme comfort and support for a lovely night sleep these open coil springs are interconnected by a continuous wire which is called helical and the top is finished with layers of fillings to ensure a comfortable and softer sleeping area for you it also offers 135 gauge sprung unit to bring more flexibl