Hi there,
It’s not possible to set preselected product variants with the native functionality of the Wix stores app, however, you can create your own product pages from scratch with a bit of code and using the stores app collections to display your products.
I recommend reviewing these articles to use a starting point:
We also have a few examples that may help give you a better idea:
Please kindly note this forum is specifically for sharing coded related issues and solutions regarding Corvid. If you already have code feel free to post your code here so others can assist or see your solution.
For future reference, if you have questions regarding Wix apps in general or any technical issues it would be best to contact our customer care team.
Best regards,