Scooby Doo Hat Set for Kids - Bundle with Scooby and Shaggy Baseball Cap Plus Stickers | Scooby-Doo Merchandise for Boys, Kids. This Scooby Doo cap set includes 1 Scooby Doo baseball hat with an adjustable back strap and colorful artwork featuring Scooby Doo and Shaggy. Scooby Doo cap measures 6" x 4" x 10" and with its adjustable back strap, it comfortably fits most young children's heads. Great for any fan of the show Scooby Doo, this Scooby Doo hat for kids and toddlers is perfect in a gift set or as party favors at your next Scooby Doo-themed birthday party. Officially licensed Scooby Doo merchandise for kids. The Scooby Doo baseball hat for boys and girls also comes with Scooby Doo stickers.