Custom product size?

[smileX]

Hi everyone!

I´m trying out PrestaShop and I really like it´s features so far, but I do have a question about the product customization. I know how to add a field where the customer can choose between different sizes but is it possible to add a "textfield" so the customer can type in any size he/she wants?

If you don´t know what I mean just ask and I´ll try to explain better!

Thanks guys! Regards.

EDIT: I just found the "Customization"-tab which kinda worked, but I want my textfield just below the field where you fill in the quantity. Anyone know how to do this, want to avoid editing the CSS for the theme.