**mcota4421**- JotForm Support
**BDAVID**That is not possible with the payment integration as you can have only one drop down field for quantity. A way around this would be:

1) Creating your products into native fields, so you can use a drop down field for each size:

2) Then perform a calculation to obtain the total: https://www.jotform.com/help/259-How-to-Perform-Calculation-in-the-Form

Result:

Finally, if you want to pass the total to your payment field, please see this guide: https://www.jotform.com/help/275-How-to-Pass-a-Calculation-to-a-Payment-Field

Let us know if you have more questions.