Americans can now order at-home COVID-19 rapid tests for free through covidtests.gov, which launched Wednesday as part of a White House initiative. 

Orders — which only require your name and home address — come in a set of four individual antigen tests and are expected to begin shipping late January through the U.S. Postal Service. There’s a limit of one order per residential household.

The administration also announced Wednesday that 400 million N95 masks will be available at community health centers and retail pharmacies across the country for free starting next week as part of a Centers for Disease Control and Prevention effort to properly mask Americans.

The CDC updated its mask recommendations this week, in which it clarified that N95 masks, surgical masks and respirators “provide more protection to the wearer” than cloth masks.