100% paper straw – breathable and comfortable Size Adjustable – Medium best fits for 56-58CM 22-22.8; Large best fits for 58-60CM 22.8-23.6. With an adjustable size drawstring built inside the sweatband. Foldable & Packable – you can slightly fold it and tuck in away in suitcase, great for cruise, beach vacation, outdoor and the like. Also it can regain its shape easily, but sometimes you might need steam/ironing machine to reshape it, you can find the instruction from the product images. Unisex Straw Fedora – this short brim sun hat looks stylish on both male and female. Fashionable – the unique waist band design makes this class fedoras more attractive and distinctive. Breathable & Lightweight – so it does not overheat in the summer, the brim can also provide some sun coverage.