You can edit the weight class by clicking the edit pencil button.
You can choose to "delete" the Weight Class on the top left corner and click the + button to add new.
You cannot delete if the weight class has already been used for the order. Once the order is deleted the weight class can also be deleted
To insert a new weight class click + Button, the following screen will be displayed.
Weight title: Type name of the weight measurement (i.e. Kilogram)
Weight Unit: Enter the units of measurement (i.e. kg)
Value: Enter the value - this option is calculating the default value so set up one default value (There are 1000 g in 1 kg, so the value of g would be set to 1000)
Finally, check that all the mandatory (*) are filled, and pressing the 'Save' button in the upper right corner will save the information.
Then how to use this weight class -- catalog --> product --> Data tab --> give the weight class
Let's take a look at how the weight class will display from the front end of your store.
Congrats!!! Now your product weight class is enabled to the public, Which will help your customers make an informed decision with their purchase.