diff --git a/apps/location/admin.py b/apps/location/admin.py
index adb355ac..a52fa14e 100644
--- a/apps/location/admin.py
+++ b/apps/location/admin.py
@@ -19,9 +19,15 @@ class CityAdmin(admin.ModelAdmin):
     """City admin."""
 
 
+class WineAppellationInline(admin.TabularInline):
+    model = models.WineAppellation
+    extra = 0
+
+
 @admin.register(models.WineRegion)
 class WineRegionAdmin(admin.ModelAdmin):
     """WineRegion admin."""
+    inlines = [WineAppellationInline, ]
 
 
 @admin.register(models.WineAppellation)
diff --git a/apps/location/serializers/common.py b/apps/location/serializers/common.py
index cfc14355..2a70c3b8 100644
--- a/apps/location/serializers/common.py
+++ b/apps/location/serializers/common.py
@@ -167,7 +167,6 @@ class WineRegionBaseSerializer(serializers.ModelSerializer):
     """Wine region serializer."""
     name_translated = TranslatedField()
     country = CountrySerializer()
-    appellations = WineAppellationBaseSerializer(many=True)
 
     class Meta:
         """Meta class."""
@@ -176,5 +175,4 @@ class WineRegionBaseSerializer(serializers.ModelSerializer):
             'id',
             'name_translated',
             'country',
-            'appellations',
         ]
diff --git a/apps/product/models.py b/apps/product/models.py
index 2f65c16a..b0b1795e 100644
--- a/apps/product/models.py
+++ b/apps/product/models.py
@@ -79,8 +79,8 @@ class ProductQuerySet(models.QuerySet):
     """Product queryset."""
 
     def with_base_related(self):
-        return self.select_related('country', 'product_type', 'establishment') \
-                   .prefetch_related('product_type__subtypes')
+        return self.select_related('product_type', 'establishment') \
+                   .prefetch_related('product_type__subtypes', 'country')
 
     def common(self):
         return self.filter(category=self.model.COMMON)
@@ -120,8 +120,8 @@ class Product(TranslatedFieldsMixin, BaseAttributes):
     description = TJSONField(_('Description'), null=True, blank=True,
                              default=None, help_text='{"en-GB":"some text"}')
     characteristics = JSONField(_('Characteristics'))
-    country = models.ForeignKey('location.Country', on_delete=models.PROTECT,
-                                verbose_name=_('Country'))
+    country = models.ManyToManyField('location.Country',
+                                     verbose_name=_('Country'))
     available = models.BooleanField(_('Available'), default=True)
     product_type = models.ForeignKey(ProductType, on_delete=models.PROTECT,
                                      related_name='products', verbose_name=_('Type'))
@@ -138,6 +138,9 @@ class Product(TranslatedFieldsMixin, BaseAttributes):
                                     related_name='wines',
                                     blank=True, null=True,
                                     verbose_name=_('wine region'))
+    wine_appellation = models.ForeignKey('location.WineAppellation', on_delete=models.PROTECT,
+                                         blank=True, null=True,
+                                         verbose_name=_('wine appellation'))
 
     objects = ProductManager.from_queryset(ProductQuerySet)()
 
@@ -153,6 +156,9 @@ class Product(TranslatedFieldsMixin, BaseAttributes):
             raise ValidationError(_('wine_region field must be specified.'))
         if not self.product_type.index_name == ProductType.WINE and self.wine_region:
             raise ValidationError(_('wine_region field must not be specified.'))
+        if (self.wine_region and self.wine_appellation) and \
+           self.wine_appellation not in self.wine_region.appellations.all():
+            raise ValidationError(_('Wine appellation not exists in wine region.'))
 
 
 class OnlineProductManager(ProductManager):
diff --git a/apps/product/serializers/common.py b/apps/product/serializers/common.py
index c0a8c6ed..fb2f7aeb 100644
--- a/apps/product/serializers/common.py
+++ b/apps/product/serializers/common.py
@@ -2,7 +2,8 @@
 from rest_framework import serializers
 from utils.serializers import TranslatedField
 from product.models import Product, ProductSubType, ProductType
-from location.serializers import WineRegionBaseSerializer
+from location.serializers import (WineRegionBaseSerializer, WineAppellationBaseSerializer,
+                                 CountrySimpleSerializer)
 
 
 class ProductSubTypeBaseSerializer(serializers.ModelSerializer):
@@ -41,6 +42,8 @@ class ProductBaseSerializer(serializers.ModelSerializer):
     product_type = ProductTypeBaseSerializer()
     subtypes = ProductSubTypeBaseSerializer(many=True)
     wine_region = WineRegionBaseSerializer(allow_null=True)
+    wine_appellation = WineAppellationBaseSerializer(allow_null=True)
+    available_countries = CountrySimpleSerializer(source='country', many=True)
 
     class Meta:
         """Meta class."""
@@ -55,4 +58,6 @@ class ProductBaseSerializer(serializers.ModelSerializer):
             'subtypes',
             'public_mark',
             'wine_region',
+            'wine_appellation',
+            'available_countries',
         ]
diff --git a/apps/utils/models.py b/apps/utils/models.py
index fb1de17c..03330eb4 100644
--- a/apps/utils/models.py
+++ b/apps/utils/models.py
@@ -44,18 +44,19 @@ class TJSONField(JSONField):
 
 def to_locale(language):
     """Turn a language name (en-us) into a locale name (en_US)."""
-    language, _, country = language.lower().partition('-')
-    if not country:
-        return language
-    # A language with > 2 characters after the dash only has its first
-    # character after the dash capitalized; e.g. sr-latn becomes sr-Latn.
-    # A language with 2 characters after the dash has both characters
-    # capitalized; e.g. en-us becomes en-US.
-    country, _, tail = country.partition('-')
-    country = country.title() if len(country) > 2 else country.upper()
-    if tail:
-        country += '-' + tail
-    return language + '-' + country
+    if language:
+        language, _, country = language.lower().partition('-')
+        if not country:
+            return language
+        # A language with > 2 characters after the dash only has its first
+        # character after the dash capitalized; e.g. sr-latn becomes sr-Latn.
+        # A language with 2 characters after the dash has both characters
+        # capitalized; e.g. en-us becomes en-US.
+        country, _, tail = country.partition('-')
+        country = country.title() if len(country) > 2 else country.upper()
+        if tail:
+            country += '-' + tail
+        return language + '-' + country
 
 
 def translate_field(self, field_name):