Pop Mart will restock two popular Labubu blind boxes, which often sell out instantly, on Friday, Sept. 12, and Saturday, Sept. 13, according to the Pop Mart website.

The Labubu blind boxes, which hide the exact content of the package until the customer opens it, sometimes revealing an especially rare item in a series, will be made available for purchase through the online store's Pop Now feature.

The "Big Into Energy" and "Have a Seat" Labubu blind boxes will be available for purchase on select days throughout the weekend.

The boxes are only available on the Pop Mart app, which can be downloaded to your phone through the Google Play Store or the App Store.

Before attempting to purchase a Labubu through the app, ensure it is up to date and functioning correctly. If you have a VPN on your device, it will likely need to be turned off.

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A single blind box of Labubu restock retails for $27.99, excluding tax and shipping fees, according to Pop Mart. Customers can purchase a maximum of six single blind boxes each.

Purchases of $29 or more made using the Pop Now feature will receive free shipping.

When purchasing a Labubu online, customers have the option to make a regular purchase of a blind box by adding it to their cart. However, the Pop Now feature allows customers to select a specific blind box from a virtual display and open it online to reveal what's inside before it ships.

The feature does not allow customers to purchase whole sets and limits customers to only purchasing six blind boxes during the restock.

Customers using Pop Now can scroll through the virtual displays, which contain multiple blind boxes. Depending on the product's popularity, users may have to scroll for a while before finding a box that is available for purchase.

Once the blind box is picked, customers will be able to reserve it for five minutes. Once checkout begins, customers will have 15 minutes to complete their purchase. Otherwise, the item will be removed from their cart.

Restocks happen in a flash, and the highly coveted Labubus can sell out in less than a minute.

Being able to purchase a Labubu is based purely on luck, but to ensure the odds are tilted in your favor, here are some tips, based on USA TODAY's research:

Labubu is a doll that resembles a monster, featuring a large head, sharp teeth and prominent eyes. The Labubu keychains everyone is obsessed with are furry and come in different colors, shapes and sizes.

Pop Mart has sold small Labubus, some shaped like shrimp tempura, carrying Coke products, dressed as pumpkins and more.

Some people might say the doll looks a bit scary, while others think it's downright adorable.

The doll was designed by Hong Kong artist Kasing Lung roughly a decade ago. But today, Labubus are sold worldwide by the Beijing-based toy maker Pop Mart as part of their "The Monsters" line.

Julia is a Trending reporter for USA TODAY and covers all things Labubu and Pop Mart.. Connect with her on LinkedIn, X, Instagram, and TikTok: @juliamariegz, or email her at [email protected]