Kalles 4.0
The breadcrumb can reduce the number of actions a visitor needs to take in order to navigate to a higher-level page, and improve the discoverability of your store.
In Theme customize, go to the Product page > Default product > On the left sidebar, you guys will see the Breadcrumb option here:
Click on the Breadcrumb option and the right settings sidebar will show up.
  • Show breadcrumb checkbox: Check/ uncheck this checkbox to enable/disable the breadcrumb.
  • Show back/next product links checkbox: Tick on this checkbox to show previous/ next product if you open the single product page from a Collection page.
When you go to the Single product page via the Collection page, the previous/ next product option will show like the image below:
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