Overall dimensions: 58 x 48 cm, inserts (Styrodur with 1 cm felt): twice 28.5 x 19 cm + once 28.5 x 9.5 cm. Maybe you want to make a wider scarf, a big picture or a curtain and you can't get by with the 19 cm of our normal sliding pillows - here is the larger pillow with inserts of 28.5 cm. Again, you can turn the inserts, although they are rectangles. The side parts of the pillow consist of 3 cm Styrodur, the movable middle parts of 2 cm Styrodur and 1 cm felt. They are strong to hold pins and easy to prick. The rounded corners of the pillow make it easier to work from the side. Overall size: approx. 58 x 48 cm. There are also additional inserts for this pillow. They fit into our module system.