97% Cotton 3% Elastane Boys Ben 10 T-Shirt. This grey short sleeve t-shirt features Ben and his Omnitrix watch and his super hero companions Diamondhead, Overflow and Upgrade. For the coolest outft dress with jeans! This top is one for every fan of Ben Tennyson and the aliens will simply love! Officially licensed Ben 10 merchandise, exlcusively desinged for Character USA.