Material: Made of waterproof nylon fabric and polyester net mesh, easy to clean, breathable, wear-resistant, quick-drying, lightweight and comfortable wear. Size: Unisex design, suitable for head circumference around 22 - 24 inches/56-61cm. Hat brim width: 3.7inches/9.4cm. sun hat is only 3.6oz, this weight is very comfortable to wear. can be easily folded and packed well. ADJUSTABLE SIZE & CHIN STRAP: Rear elastic drawstring design, one size fits most adult head circumference 22-24inch. Adjustable chin strap holds the hat in place on windy days. Removable neck flaps, mesh face cover for complete protection. Effectively prevent dust, sun and even mosquitoes. Breathable: There are ventilation mesh holes on the top of the hat and the front of the neck flap. Can increase air circulation, keep you cool and breathable. Best partner for various outdoor activities. Partner Outdoors: Perfect for any outdoor activities: fishing, hiking, camping, hunting, gardening, cycling, climbing, boating etc. If there is any issues about hat product, please inform us at any time for after sales service and we will follow up closely.