This gently supportive airsprung quattro divan with sliding door set is perfectly suitable for those people who require slightly softer feel on their mattresses the quattro divan is completed with sprung mattress that features 135 gauge duraspring spring units for added comfort and support this duraspring mattress offers an incredibly softer and supportive sleeping surface for a luxurious night sleep it prevents the roll off or roll together to sleep soundly even if your partner moves