Rated UPF 50+ fabric with wide brim and long neck flap designs to protect you from sunburn Side mesh panels for breathability and ventilation; Built-in soft moisture wicking sweatband Chin strap with a locking toggle to keep the hat stay in place on windy days Adjustable back cord for a custom fit for head size up to 23.6in Ideal for any outdoor activities and daily use; Easy care: hand wash, dry in shade UVSAI unisex sun hat has got you covered on sunny days with its UPF 50+ fabric, wide brim, and long neck flap. It has side mesh panels for ventilation, and the chin strap lets you not worry about it flying away on windy days. It's perfect for any outdoor activities like hiking, gardening, fishing, camping, etc.