RKR Floating Bar Add to Cart

It only appears when needed.

While the buy button is visible, the bar isn't there: it would unnecessarily obscure the product. As soon as it leaves the screen, it reappears at the bottom—or top, you choose—with the product photo, its name, the selected variant, the price, and its own button.

/ Follow the combination the customer is looking at

This is what breaks in almost all floating toolbars. When you choose a size or color, PrestaShop doesn't update the shopping cart block; it replaces the entire thing. A toolbar that retains the old button stops adding items to the cart from that point on, and nobody notices until orders go missing.

/ Purchase using the button from your own template

The bar doesn't add items to the cart automatically; it passes the click to the button you already have. This ensures that the selected quantity, stock control, theme notification, and anything else you've added to that button are preserved. If you change the theme tomorrow, the bar will continue to function.

And it adapts to your store without touching any code.

/ On mobile, where it's most noticeable

On a phone screen, the buy button disappears with the first swipe. The bar shrinks automatically: it keeps the photo, the price, and the button, leaving the text for larger screens.