6.5" dia. pair by Criterion Cap Company. 1950s. First is for "Helicopter The Flying Turtle" and features a 5" long plastic turtle affixed to cap with plastic clasp. Turtle has bobbing head and tail. Beanie has cut-out stars on brim. Felt has faded, but turtle remains bright and clean. Fine. "Space Turtle" features 5.5" long "Turtle" which has same style body and tail with spring-necked head consisting of plastic ball with sleep eye. Very unusual design. Same star pattern on brim. Virtually no fade to felt. Exc./NM. A very unusual pair.