Make sure you remain refreshed when out on the battlefield with this super-cool Black Ops 4 Heat Change Mug. Fill it with your favourite hot drink and stay alert whilst taking on enemies from the comfort of your own home. This standard size mug has a capacity of 300ml and features Ruin's graphics emblazoned on a heat changing decal. Watch the image change when you pour in your hot drink, turning from a dark black to a bright orange The Black Ops 4 Heat Change Mug is a great birthday gift or Christmas stocking filler for lovers of the Call of Duty Black Ops franchise, as well as video game lovers in general. The epic Call of Duty (COD) games franchise first launched in 2003 and has since become one of the best-selling video game series of all time, with numerous sequels and spin-offs. With millions of loyal fans keen for ever more simulated warfare from the masters of the genre, COD has become an industry staple, and returned to its roots in 2017 with the launch of Call of Duty WWII to much fan praise and critical acclaim. Previous titles such as Modern Warfare, Black Ops, and Infinite Warfare have made this record-breaking franchise one of the most popular ever created, and that popularity is set to rise further with a future movie franchise also in the works. The Black Ops 4 Heat Change Mug is an officially licensed product.