If you are located in Khulna city, then you will be able to avail drop off facility from specific areas. If you are located outside Khulna, Also, you can return the product in below address and send it through Sundarban Courier Service : attn to, Md. Mursalin Ahamed , Khulna service (khulnaservice.com) Address: House no # 92, Road No #1,Nirala R/A,Khulna, Bangladesh