Material:imported update raw material ,100% quick-dry sloan material,Full-dull 70D Taslan</br>Free Size:Head Circumference 21.6inch-23.3inch, 3CM/1.2inch widening sweatbands</br>The brim is 4" wide in the front. 3" wide in the back and 2 3/4" on each side</br>The inner hat comprises a lightweight mesh for excellent ventilation,quick-dry and excellent sunblock for the outer shell</br>UPF 50+ - Block 97.5% of the sun's harmful ultraviolet rays,Our fabric is rated at an unbeatable UPF 50+ (Ultraviolet Protection Factor) by the Australian Radiation Protection Agency</br></br>Product Description</br></br><b>Surblue</b><br> <b>About Our Prout</b><br> Surblue always maintained the original position of " Quality First <br> <b>MATERIAL</b><br> The best 100% quick-drying imported material - Full-dull 70D Taslan<br> Warp with full-dull 70D nylon -6FDY silk, weft used full-dull 160D nylon air mutation<br> Sunblock, soft, windproof, breathable and comfortable<br> <br> <b>SIZE</b><br> The brim is 4" wide in the front. 3" wide in the back and 2 3/4" on each side.<br> <br> <b>RECOMMENDATION</b><br> <b>We do not recommend machine washing,but we tested that it can be machine wash.</b><br></br><br/>http://www.amazon.com/gp/product/B01K19SDK8