SidelineSwap’s prepaid shipping label covers the entire cost of shipping. You can use any box or packaging you may have lying around the house to ship your item. Make sure you’ve packaged your item as securely as possible.
Note for U.S. sellers: Do not use Flat Rate USPS shipping boxes when shipping with a Priority Mail label. Do not use packaging from a competing shipping shipping service; i.e. combining a UPS box with a USPS label. Your package will be returned to the sender.