Hat size best fits for 56-58cm, 7-7 1/4, 22"-22.8"inch ladies' head. Wide brim in plastic & flap provides an enough shade and uv sun protection to cover your face & neck from sunshine especially in summer without blocking your view.SPF 50: this sun hat has passed UPF 50 test, it could block most sun UV rays. Lightweight & breathable. Good perforamnce for travel and outdoor activities such as hiking,fishing,golf,boating;regardless of where you wear it - beach,cruise ship, garden.
