Ultimate 60s retro. Match up with a pair of patched jeans to complete the look. 100% Cotton. Because we are based in England UK, our clothing labels carry UK sizing dimensions, but please rest assured that the size you select when you purchase is the US size. In your parcel will be an easy to follow chart to show how UK sizing is converted to US sizing. If you have purchased an item of men's clothing there is no difference between UK and US size labels.