Discover our hats for women edit at Oasis, featuring on-trend styles such as winter hats for women to keep you. Beanie hats will forever be a winter staple with their cosy thick knits in an array of e...arthy tones and fabrics. Although the weather may be getting colder, some days a stylish sun hat can come to your aid such as a classically sophisticated fedora or a straw floppy hat.