The beanie hat is a soft pull on hat which usually comes in one size to fit all. The lenght of the beanie hat can vary from short to long. A long beanie is often referred to as a sock hat. A beanie can have a turned up cuff or no cuff at all and is just worn straigh down. Beanies come in many fabrics including wool, polyester, cotton or a mixture of these. A very popular beanie style at present is the bobble beanie.