Since some pre-orders are still making their way from the manufacturer to our warehouse, we're unable to accurately determine an exact ship date. We won't bore you with the logistical details, but there are various sticking points where things can get a little delayed. For example, during the holidays, port congestion can cause extended delays. By providing a broader shipping window, it allows us room for any of those unexpected delays while still meeting your expectations. We will always reach out to customers whose orders are affected by unforeseen delays and help resolve the issue in a timely manner!