Regarding the example of the STYLE CA042, we have already made it produced in the factory, but the factory told us that the 100% woolen material of the upper collar cuff cannot be found, if we order a special one, we will have to wait for a long time. I am sending this mail to you that I would be grateful if you can offer us the upper collar cuff of this type of shoes, or is it acceptable to use the knitting material. Thank you!