Certain includes three fin pieces to large and one small. Made of ultra light resin plastic can be heat molded to shape. Sculpting design only on one side back side is smooth.
The two large fins each measure: 2 1/2 inches Tall by 7 inches wide
Small fin measures 2 3/4" wide x 3" tall
*** To recreate the Creature from the Black Lagoon top you will need both the Shoreline set and the Tri-fin Set