Our standard recommendation for the most durable and comfortable filling option is Trillium. Trillium is a high-tech, eco-friendly, hypo-allergenic, Down-alternative that will outlast its Down counterpart while mimicking its comfort and luxury. What does that mean to you? Longer lasting, better-feeling furniture that regains it shape quicker than Down. Of course, Erinn V. stands behind all filling options as each is engineered specifically to ensure premium support and comfort. We use high-resilient solid foam-cores, never pieced together; our down is 10/90 White-Goose.