Inflatable Dinosaur Costume | T-Rex Full Body SuitStomp Into the Party with a Giant Inflatable T Rex Halloween dinosaur costume made of durable polyester that inflates into a towering T Rex jumpsuit. This oversized outfit features detailed dinosaur print, a giant open mouth design, and clawed feet for a realistic prehistoric look. With a built in fan powered by USB or batteries, it stays fully inflated for hours and gives you full body coverage that's perfect for parties, parades, and Halloween fun.