If I have a factory in Taiwan, I can make a special size for you. As long as it is not thicker than 210 cm, it can be customized. We all produce 4 sizes in large quantities. We have modified the ready-made size to be a little smaller. Therefore, your calculation method is to add the price of the ready-made thicker cushion plus the modification cost, approximately$ 3900~$ 6900 depends on the size. The delivery time is about 2~3 weeks. For this kind of order, please write to firstname.lastname@example.org and our customer service department will process it immediately.