User Guide & Manual

Size Reservation

Automatic Size Monitoring & Reservation

Monitors the availability of your chosen product and automatically adds it to your cart the moment it is released by another shopper.

How does reserving unavailable items work?

On Zalando Lounge, items placed in a shopping cart are reserved for 20 minutes. If the shopper does not complete the purchase or removes the item from their cart, it immediately returns to public stock.

Stealer checks stock availability directly on the product page in the background, without requiring you to manually refresh the page. As soon as your desired size becomes available, the extension reserves it for you right away.

Selecting one or multiple sizes

When you visit a product page, the Stealer side panel lists all available sizes:

•Single size selection: the extension waits exclusively for the specific size you chose.

•Multiple size selection (Premium Plan): select several fitting sizes at once (e.g. 42 and 43). The extension reserves whichever size becomes available first.

•Supported categories: works across apparel, footwear, and universal One Size items.

Continuous mode (reserving multiple items)

By default, monitoring stops after a single item is successfully reserved.

•If you want to add more than one unit of the same item to your cart, enable 'Don't stop after adding'.

•Zalando Lounge limits carts to a maximum of 5 units of the same item. Once this limit is reached, the extension automatically stops.

Cart addition alerts and notifications

When an item is successfully reserved:

•The extension plays a clear audio notification.

•An on-screen confirmation displays the product name, reserved size, and time of reservation.

•The reservation is logged in your user dashboard history.

Differences between Free and Premium plans

•Free Plan: monitors 1 size, requires clicking an on-screen confirmation prompt to add to cart, 24-hour interval required between uses.

•Premium Plan: fully automated addition without clicking, concurrent multi-size monitoring, continuous mode for multiple items, and no waiting periods or limits.

Need Assistance?

If you have questions about how the extension works or need help with setup, our support team is available at pomoc@stealer.pl.