Blue Fluted Plain captivates with its classic versatility. Its graceful decoration emphasises the delicate form and craftsmanship of each piece. Blue Fluted Plain is a timeless service; it can be used everyday, as the basis for a unique collection of Royal Copenhagen porcelain, mixing the traditional with the modern. Eternally classic. With its simple, elegant look, the Blue Fluted Plain thermal mug is perfect for everyday use as well as special occasions. The thermal mug is composed of an inner and outer cup that form a cavity, ensuring that the porcelain does not conduct heat.