G4Free Outdoor Sun Protection Fishing Cap with Neck Flap, Packable Wide Brim Anti-UV Sun Hat UPF for Travel Fishing Camping Hiking Hunting Safari for Men and Women Material: 100% nylon, highly breathable, comfortable, moisture wicking and quick drying. Anti-UV, transfer humidity, ray and sun protection. Breathable Mesh: 2 sides of the hat is made of breathable mesh material, it keep you day and clean even in a hot summer day! Adjustable Hat Strap and Chain Strap Cord Lock: Adjusable hat strap on the back of the hat make it a more flexible hat, perfectly fit both for men, women and kids. Elastic Cord attached keep it steadily wear on your head. Professional Fishing Hat: Large (unfolded: 20.47(L) x 13(H) inches) and long Bill Flap, protecting your neck and ears. There is a button on it, which can be fastened up to the button on the back of the hat. Intended Use: Lightweight, foldable, comfortable hat for your entertainments! It's perfect choice for traveling, fishing, walking, boating, hunting, paddle boarding, camping, gardening or other outdoor activities!