Portal 2 Companion Cube Gift Box [The Coop] Give the gift of Valve's Portal 2 , or just wrap the gift in Portal 2 style with the Portal 2 Companion Cube Gift Box! A perfect cube at 6-inches tall x 6-inches wide x 6-inches long, the Portal 2 gift box is high-quality and lovingly designed to match the very same Weighted Companion Cube design seen in the popular first-person puzzle-platform video game. Perfect for fans of Portal !