Good morning.Thanks for your checking.Please confirm our comments below in red.1. Regarding an extra outlet hole in the K-111/112 battery pocket, our production staff has opened an extra hole when making it, and there will be only one hole when shipping according to order . Regarding the (WM, WL) size data in the size table of K-111/112, our garment masters feel a bit strange. Can you help me check if the size table you sent us is correct?>We checked your samples and our size chart again. For EK-111, your sample’s back length(60cm) is no problem. For EK-112, your sample’s back length(57cm) is no problem. Only for shoulder width, please revise to same width as our original size chart(40.5cm). Could you please send modified size tables for EK-111 and EK-112 that are reflected above comments?2. Regarding K-303/304/306/307/309: We will produce according to your feedback when shipping according to order; all accessories will also be included. In addition, we don't make sewing 4D labels for all samples, we want to save 4D labels!>Well noted, thanks.3. About K-305: Because this cushion is a sewing process, it is very difficult for us to achieve waterproofing. However, when we design the product, we consider that the customer may be immersed in water when using the product. It is 100% safe to use, please refer to the attached video! ("Normal use under immersion" is a requirement mentioned many times by ACHIHA when developing this product. After many experiments, we can fully meet the requirements! And it is very safe!)>Well noted, thanks for your explain. By your explanation, we don’t worry for workableness of your heat unit under immersion. However, such a seat cover takes time to dry once the internal foam pad gets wet. For customer’s convenience, could you please add drain holes on bottom side as our instruction?