? SOFT BREATHABLE ?: 55%Cotton&45%Linen. Head circumference: 56-58.5cm/22”-23” Hat Brim: 18cm/7in ? SUN SHADE&COOL ?: Passed UPF 50+ test and can block over 97.5% of sun UV rays. Breathable and keep cool in sun. Shade face and back of neck. ? REVERSIBLE STYLE ?: Two-sided wearing design, you can change pattern wearing to match apparel. With detachable chin strap to keep from wind. Also with a removable bowknot. ? PACKABLE CRUSHABLE ?: With an invisible wire around brim, bends anyway you want it. Easily reshaped. High quality materials and fabulous, Fold-up brim material can be worn folded up or down, also can be easily carried inside handbag or beach tote. Foldable and easy packable. ? EASY CARE LASTING QUALITY ?: Hand wash only in cool water, No chlorine bleaching, Hang dry in shade, Do not iron, No machine wash or brush wash.