// general info:
// 2 tables penetrations / products.
// penetration has one or more products.

// setting other data of model penetration
penetration.setHeight(spinner4.getSelectedItem().toString());
penetration.setWall(spinner2.getSelectedItem().toString());
penetration.setPosition(position.getText().toString());

// Now I'd like to save the selected products from selectboxes
// product 1 + 2 selected

products = new RealmList<>();

if(selectedStrings != null) {

    for (String string : selectedStrings) {
        // Probably wrong as fuck
        Product product = new Product();
        product.setProduct(string);
        products.add(product);
    }

}

penetration.setProducts(products);