Printed on Kakugo 8 (119 x 197mm) envelopes. The print design cannot be changed because it is printed by a printing company. You can increase the quantity in units of 5. (After the first 5, it's 380 yen per 5.) 5 sheets → 580 yen 10 sheets → 960 yen 15 sheets → 1340 yen 20 sheets → 1720 yen 25 sheets → 2100 yen 30 sheets → 2480 yen