What is the fine-grained topic of the following text: Despite those furnishing solutions, substantially modern or traditional, within the Divanidea collection of fixed sofas can be found also eclectic and creative models, with a bold and unedited look, such as Gogo: the peculiar foldable backrests of this sofa will change the entire conformation and shape of the piece of furniture. Only return the topic.
Divanidea collection of fixed sofas and their features