In order to improve recommender accuracy for the specific product, we would need to collect actual data from people wearing the product.
Now you can provide those data in the form of "User Match" in the app.
In the size chart > recommender, you will see a "User match" button
Clicking on it will open the User Recommender Match dialog.
First, we need to add user profile, so click on "Add User", then provide the basic info for the person.
Click "Create," and you will see the person show up in the list.
After creating a user match, you will see the person show up in the "matched users" table. The selected size will show up as "Ideal size," and the current recommended size from the recommender will show up as "Recommended Size"
We are currently iterating on this feature and developing a new version of the recommender that can be further optimized based on the data provided here.