The Home Collection Arctic Chill Super Cooling Gel Fiber Fill Mattress Topper by Ella Jayne will transform your bedding into pure luxury. The king mattress topper measures 78" L in. x 80" W in. The shell is made out of 58% rayon cold fiber and 42% polyester. <br> Give your bed a fantastic makeover with this beautiful honeycomb textured top that not only feels awesome but also keeps you cool and dry for a more restful sleep. Filled with down alternative poly gel fiber, the mattress topper provides the perfect balance of softness and support so you get the most comfortable sleep. <br> Ella Jayne brings the luxury bedding to your home, so that you can get a relaxing, rejuvenating night’s sleep every single night.