Sun Protection and Cooling Comfort OutdoorsThe Flying Fisherman Boonie Hat combines lightweight quick-drying fabric with vented mesh sides for breathable comfort on the water or on the trail. Its adjustable chin strap provides a secure fit and the UPF 50 rating helps shield against harmful UVA and UVB rays. Lightweight quick drying material Vented mesh sides for airflow Adjustable chin strap UPF 50 sun protection Made for fishing and outdoor use