Armycrew Officially Licensed Jurassic Park Assorted Baseball Caps. 85% Acrylic , 15% Wool. Jurassic Park Park Ranger Tyrannosaurus logo is embroidered on the front; Officially licensed product by BIOWORLD. High quality snapback baseball cap. 6 panels, high profile, structured crown. Stiff and flat bill, same color under bill. One size fits most with an adjustable plastic snap closure.