Monster Jam is the ultimate pit stop for watching these greatly engineered vehicles roar in your local stadium, performing near-impossible feats at breakneck speeds. At Monster Jam, legends have been made over the years as these trucks compete in races and other freestyles to find out who truly is the best. This set-top features the Grave Digger and its logo shooting out of green fire. The pants, as well as the shirt sleeves, feature an all-over print of the same design. The whole pajama set is 100% cotton.