Photo courtesy of the Smithsonian

“The Wizard of Oz” fans have less than two weeks to click their heels to the National Museum of American History to view a pair of red sequin slippers that Judy Garland wore in the 1939 film.

The Smithsonian has announced that after raising enough money to conserve the exhibit, the iconic footwear won’t be on display after April 23. And they will be gone “for a significant period of time.”

Though several pairs of slippers were made for the film, the size-five shoes are “well-worn, suggesting they were Garland’s primary pair for dance sequences,” according to a Smithsonian release.

The pair of shoes were donated in 1979, and officials say it’s one of the Smithsonian’s most popular artifacts.

Last fall, the institution launched the “Keep them Ruby” Kickstarter campaign with a $300,000 goal to restore shoes. The campaign page describes the slippers, which were constructed to last only during filming, as “fragile and actively deteriorating.” The coating on the sequins “that give the shoes their hallmark ruby color is flaking off its gelatin base,” plus some threads that hold sequins in place are broken, officials wrote.

In its first week, 5,360 people donated $301,311 to the campaign, CBS reported. About 1,100 backers later donated, putting the fund’s total at $349,026.

Fans can view the shoes in the museum’s American Stories section.