We can provide wool felt document bags as well as polyester felt bags. Normal felt thickness is 3mm. If you want to make the felt thickness 1mm, 2mm or others, it is no problem. And you can choose felt colors from our web color chart, all of them can be made. We have our own factory in Xingtai, Hebei, so we can accept OEM. For the normal packing is each in poly bag. We have a standard size of this document bag; it is 30x40cm. Custom size is acceptable. We have been in this industry for more than 20 years; our products enjoy good reputation among our customers. Hope to do business with you.