A perfect addition to your coffee mug collection, the Portal 2 Companion Cube Mug is a must-have for any video game enthusiast. Ideal for sipping your favourite hot beverage, this square double-walled mug is made of ceramic, making it the perfect gift for any fan out there! The mug features an iconic Companion Cube design from Valve's Portal, sure to be a conversation starter among your friends and fellow gamers alike.