- Size and fit: approx 18.11 inches (46 cm) tall; bottom circumference 36.2 inches (92 cm); fits over hats for most adults and children. Elastic cord with toggle secures in place for easy on and off. - Protection and function: fly screen hat provides a breathable barrier for the whole face, keeping insects away from the face, neck and head. Adjustable rope holds the hat in place during movement. - Applications: ideal for outdoor activities such as camping, hiking, fishing, gardening and farming, and travel; the adjustable rope helps keep the hat secure so you can enjoy outdoor time with protection. - Material and design: made of polyester and cotton fabric with breathable mesh; durable and lightweight; high visibility mesh; soft brim for comfort; breathable to release heat and keep the face cool while staying protective. - Comfort and portability: lightweight and easy to wear and carry; breathable design enhances comfort during extended use.