Product weight and dimension are needed when your shipping rate is based on weight. Some products come with variants and can have different weight, some are not. This article shows you where you can add or edit weight for products with or without variants.
For products without variants
1. For products without variants, you can simply add or edit its weight in Admin > Products > click into the product > scroll down to Shipping, you can find Weight, Length, Width and Height fields.
2. Save and done.
For products with variants
1. For products with variants, you may edit its weight in Admin > Settings > Products > click into the product > scroll down to Variants, scroll to the far right and you can see Weight, Length, Width and Height columns.
