Base: 12" fully sprung edge zonal unit, Hypo allergenic insulator, Pine frame with load bearing joints glued and screwed for added strength, Polyester interlining between timber and cover, Solid hardwood corner blocks with castors set into end grain, Easy-glide Twin wheel castors, Protective mini 'roll edge' divan trim, All double bases split as standard, Gold side linking, Gold branding badge, Finger touch headboard fittings