For those that are looking for a structured, supportive look and feel, Fiber is the best choice. For seat cushions, the foam core is wrapped in Dacron Fiber which offers a much more structured look to them, with minimal wrinkling of the cover. Back cushions do not contain a foam core, and contain 100% Fiber fill. While this is the most firm/supportive option available, proper maintenance is always necessary to have them looking their best and lasting for years. The video below will help show the best way to maintain your fiber cushions.