Premium Polyester, breathable, quick-drying, lightweight and soft comfortable wear Wide brim and mesh vents for cooling airflow through the crown,moisture wicking sweatband & adjustable chin strap UPF 50+ for ultimate sun protection, blocks 98%+ of damaging UVA/UVB sun rays The long neck flap protect your neck from sunburn and the neck flap can be detached. 9cm foldable wide brim, custom fit for mens and womens head girth 56-59cm Durable foldable summer bucket hat with neck flap perfect for any outdoor activities: fishing, hiking, camping, hunting, gardening, cycling, boating etc.