If you contact us before 14:00 on the day of the order, we are generally able to change the order. However, we cannot guarantee anything, as it depends on whether the package has already been picked up by UPS. We recommend writing to us via email. If you place an order during the weekend, send us on e-mail and we may be able to catch the package before it leaves our facility monday morning. However, on some days we also ship on weekends, even if customer service is closed, so we cannot guarantee that it is possible to change the order. If the change is not made before shipment, customer service will help recall the order from UPS and send a new changed order afterwards.