"There the Modern Stone-Age Family" Just those words will prompt viewers of a certain age to join in singing the show's catchy theme song. This all-time classic cartoon revolved around a stone-age family, The Flintstones, Fred, Wilma, Pebbles, and Dino the Dinosaur. They are best friends with the Rubbles, Barney, Betty, and Bamm-Bamm. These pants will have you saying Yabba-Dabba-DOOOOO! These Flintstones lounge pants feature a vintage-looking print design of the classic cartoon character family in Fred's Flintmobile with a script logo running down the left leg! The pants are made of a soft 60% cotton and 40% polyester fabric blend, for casual wear and lounging!