Units are in fat quarters or 25 cms. A fat quarter is a meter of fabric cut in half horizontally and again vertically. A fat quarter in Australia measures approx 50cm x 56cm or 18″ x 22″.
1 unit = 1 fat quarter
2 units = ½ meter
3 units = ¾ meter
4 units = 1 meter etc.
If you order more than 1 unit, the fabric will be cut and arrive as one piece.