Phone Holder (Plastic and Silicon) - Commodity Code

Hi all,

I am new here and I am trying to find the commoditty code for a bike phone holder.
The product is made mostly of Platic and silicon but I don’t know the right percentage of which.

I am not sure if I should search for silicon or plastic for eletronicts.

If anyone has a tip or advise that would be much appreciated.

Thank you all!