SONNO Oslo Divan Bed in Slate Grey Naples. This divan bed includes a free headboard and ads instant style to any bedroom. 60 day money back guarantee and a 5 year warranty on all of our divan beds & mattresses. Our easy-to-use bed customiser allows you to personalise this bed to your own style. Choose from 6 sizes, 6 spacious storage options and over 27 colours.