Youth Size - Nasa Worm Logo Embroidered Baseball Cap - Navy 100% Cotton Twill Recommended Age: Toddler to 10 Year Old - Cap Color: Navy 100% Cotton Twill Fabric Profile: Mid-Crown, Six Panel Construction - Adjustable Circumference Size: 18" to 23.5" Structure: Constructed, Soft Fused Buckram Backing Back Strap: Fabric-Covered Velcro Closure Pre-curved Bill with Matching Undervisor