Product Performance The Fabric Is Soft, Comfortable And Breathable, The Brim Is Strong And Textured, Simple But Not Deformable, Sunshade And Sandproof, Durable, Good Heat Resistance, Hat Roof Reinforcement, The Inside Of The Hat Is Lined With Sponge Composite Layer, Comfortable And Stylish To Wear, The Back Of The Hat Uses Encrypted Pc Network, Has Good Breathable Function, Natural Comfort And Breathable, Light And Dry, The Back Can Be Adjusted Double-Breasted Design, Free To Adjust The Size Of