I see some themes on Themeforest already having Product Filter feature, what is the difference between theirs and yours?

The filter on Themeforest templates only use Tags to create filter block. They cannot create filters based on Products Options, Product Vendor, Product Types or Prices. Also, with their Tag filter, they cannot let shoppers select multiple options at the same time. We can help shoppers to filter multiple options at the same time, thus help them to find what they need in quickly.