23. Do you have a size chart? (if relevant)

If you are selling products with different sizes (example gratia, clothing), it’s critical to provide users with size charts.

If shoppers are not sure if the item is the right size for them, they will hesitate a lot in the purchasing process. 

The most crucial page on your store is your product page.

If you properly construct your product page, you will see increased revenue.

If you do the opposite, any marketing efforts will fall short of expectations.

That's why you need to concentrate your design work on product page optimization.