The Royal Stewart Tartan range is designed around a traditional Scottish tartan with a rich red base colour. Particularly popular with owners of West Highland Terriers the Royal Stewart range brings a taste of Scotland to your home. Made from 100% Textured Polyester. Luxury Deep Filled Quilted Mattresses are available in eight sizes. Mattresses are made to fit oval plastic beds and are filled with deep, Supersoft Polyester Fibre to give even more softness, warmth and comfort.