Pieces stated as having a universal fitting will fit all head sizes. Often the piece will have a wire claw/construction that will be hair coloured that will fit to your head like a hair band. The piece may also have an elastic band that sits at the back of your head underneath your hair to secure the piece in place. Alternatively the piece may be positioned on a hairband that will be a universal head size.
Some pieces require you to send us your head size. Use a soft tape measure. Measure your head straight across your forehead just above your ears and over the most bulbous part of the back of your head. The full circumference is required.