These cardboard hatboxes are easy to fold. Comes in sizes; 33cm(measured from corner to corner), 40cm(measured from corner to corner), 57cm(measured from corner to corner), 60cm(measured from corner to corner). The depth of the boxes are; HB33 is approx 20cm, HB40 is approx 14cm, HB57 is approx 24cm, HB60 is approx 24cm. Please note that the 57 cm and 60 cm sizes can only be ordered upon request via email. We need to calculate the shipping costs for these first.