Add sizing to the product grids#237

I would love to see an option to see the sizing as same as colour and review without the need to enter the product itself. Where I am suggestion is here (see attached file).

Thanks for the suggestion! We have an open request for this already, so I am going to merge yours with that here: https://stiletto-theme.nolt.io/62

Please subscribe to that request if you would like to recieve updates about it in the future.