The United States Postal Service is struggling to process an inundation of packages as the coronavirus pandemic prevents people across the country from getting together for the holidays and keeping consumers out of crowded stores.

Online shopping surged more than 20% on Black Friday and more than 44% over a five-day period that included Black Friday and Cyber Monday. This year, Cyber Monday was the biggest online shopping day in U.S. history, notching more than $11.4 billion in sales.