HAY's X-Line chair seat cushion makes it even more comfortable to spend quality time on one of Niels Jørgen Haugesen's best-known works. The seat cushion is filled with a combination of polyurethane foam and polyester fiber that offer exceptional comfort – perfect for those garden dinners that run longer than expected! Even a little summer rain won’t spoil the mood, as the X-Line seat cushion is upholstered in water-repellent Olefin fabric.