Product Details: Ultraviolet Protection: UPF50+ materials One Size: Medium (adjustable) Head Circumference: 48-55cm (18.9-21.6") Head Depth: 10cm (4") Brim Width: 10cm (4") Neck Flap: 18.5 Material: Polyester Weight: 73g Key Features: Wide Brim and Extended Neck Flap: This kids legionnaire hat features a broad front brim and an extended neck flap, ensuring exceptional protection for your child's face and neck. Secure Crown Adjustable Buckle Strap: The hat includes a secure crown adjustable buckle strap that ensures a snug and secure fit for your child's head Retractable Neck Flap: Easily extend it for comprehensive coverage of your child's neck and upper back, or retract it when not needed. Chin Strap for Added Security: The addition of a chin strap on the hat provides an extra layer of security, especially in windy conditions or when your child is engaged in active play. Comfort and Moisture Management: The legionnaires hat child friendly design incorporates a moisture-absorbing sweatband perimeter that is both quick-drying and skin-friendly Easy Storage: For convenience, the hat can be effortlessly rolled into a compact tube, making it easy to store safely when not in use.