Professor Brian Cox Official Merchandise.
The Multiverse. Hooded Sweatshirt.
Note that the scale here is wrong: the typical distance between bubbles is vastly bigger than their sizes. Our type of universe might be relatively rare in being old enough and big enough to support the evolution of intelligent life.
Size Chest (to fit)
S - 34/36", M - 38/40", L - 42/44", XL - 46/48", 2XL - 50/52"