diff --git a/jdav_web/material/admin.py b/jdav_web/material/admin.py
index 31198a1..f324c77 100644
--- a/jdav_web/material/admin.py
+++ b/jdav_web/material/admin.py
@@ -4,10 +4,14 @@ from django.contrib.admin import SimpleListFilter
 from django.db import models
 from django import forms
 
-from .models import MaterialPart, Ownership
+from .models import MaterialPart, Ownership, MaterialCategory
 from easy_select2 import apply_select2
 
 
+class MaterialCategoryAdmin(admin.ModelAdmin):
+    fields = ['name']
+
+
 # Register your models here.
 class OwnershipInline(admin.TabularInline):
     """
@@ -45,10 +49,14 @@ class MaterialAdmin(admin.ModelAdmin):
                     'ownership_overview', 'buy_date',
                     'lifetime', 'not_too_old', 'admin_thumbnail')
     inlines = [OwnershipInline]
-    list_filter = (NotTooOldFilter,)
+    list_filter = (NotTooOldFilter, 'material_cat')
+    formfield_overrides = {
+        models.ManyToManyField: {'widget': forms.CheckboxSelectMultiple}
+    }
 
     class Media:
         css = {'all': ('admin/css/tabular_hide_original.css',)}
 
 
+admin.site.register(MaterialCategory, MaterialCategoryAdmin)
 admin.site.register(MaterialPart, MaterialAdmin)
diff --git a/jdav_web/material/locale/de/LC_MESSAGES/django.po b/jdav_web/material/locale/de/LC_MESSAGES/django.po
index 211e548..24af840 100644
--- a/jdav_web/material/locale/de/LC_MESSAGES/django.po
+++ b/jdav_web/material/locale/de/LC_MESSAGES/django.po
@@ -8,7 +8,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: PACKAGE VERSION\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2017-07-05 19:07+0200\n"
+"POT-Creation-Date: 2017-10-11 13:02+0200\n"
 "PO-Revision-Date: YEAR-MO-DA HO:MI+ZONE\n"
 "Last-Translator: FULL NAME <EMAIL@ADDRESS>\n"
 "Language-Team: LANGUAGE <LL@li.org>\n"
@@ -18,15 +18,15 @@ msgstr ""
 "Content-Transfer-Encoding: 8bit\n"
 "Plural-Forms: nplurals=2; plural=(n != 1);\n"
 
-#: admin.py:25
+#: admin.py:29
 msgid "Age"
 msgstr "Alter"
 
-#: admin.py:30
+#: admin.py:34
 msgid "Not too old"
 msgstr "Nicht zu alt"
 
-#: admin.py:31
+#: admin.py:35
 msgid "Too old"
 msgstr "Zu alt"
 
@@ -34,66 +34,82 @@ msgstr "Zu alt"
 msgid "material"
 msgstr "Material"
 
-#: models.py:17
+#: models.py:15
+msgid "Name"
+msgstr "Name"
+
+#: models.py:16
+msgid "Description"
+msgstr "Beschreibung"
+
+#: models.py:22 models.py:39
+msgid "Material category"
+msgstr "Materialart"
+
+#: models.py:23
+msgid "Material categories"
+msgstr "Materialarten"
+
+#: models.py:32
 msgid "name"
 msgstr "Name"
 
-#: models.py:18
+#: models.py:33
 msgid "description"
 msgstr "Beschreibung"
 
-#: models.py:19
+#: models.py:34
 msgid "quantity"
 msgstr "Anzahl"
 
-#: models.py:20
+#: models.py:35
 msgid "purchase date"
 msgstr "Kaufdatum"
 
-#: models.py:21
+#: models.py:36
 msgid "lifetime (years)"
 msgstr "Lebenszeit (Jahre)"
 
-#: models.py:22
+#: models.py:37
 msgid "photo"
 msgstr "Bild"
 
-#: models.py:33
+#: models.py:50
 msgid "Quantity"
 msgstr "Anzahl"
 
-#: models.py:40
+#: models.py:57
 msgid "Thumbnail"
 msgstr "Bild"
 
-#: models.py:49
+#: models.py:66
 msgid "Owners"
 msgstr "Verantwortliche"
 
-#: models.py:59
+#: models.py:76
 msgid "Not too old?"
 msgstr "Nicht zu alt?"
 
-#: models.py:62
+#: models.py:79
 msgid "material part"
 msgstr "Materialteil"
 
-#: models.py:63
+#: models.py:80
 msgid "material parts"
 msgstr "Materialteile"
 
-#: models.py:69
+#: models.py:86
 msgid "owner"
 msgstr "Besitzer"
 
-#: models.py:70
+#: models.py:87
 msgid "count"
 msgstr "Anzahl"
 
-#: models.py:77
+#: models.py:94
 msgid "ownership"
 msgstr "Besitzer"
 
-#: models.py:78
+#: models.py:95
 msgid "ownerships"
 msgstr "Verantwortliche"
diff --git a/jdav_web/material/models.py b/jdav_web/material/models.py
index d610775..f6253e5 100644
--- a/jdav_web/material/models.py
+++ b/jdav_web/material/models.py
@@ -8,6 +8,20 @@ from django.utils.translation import ugettext_lazy as _
 MAX_TIME_MATERIAL = 5
 
 
+class MaterialCategory(models.Model):
+    """
+    Describes one kind of material
+    """
+    name = models.CharField(max_length=40, verbose_name=_('Name'))
+
+    def __str__(self):
+        return self.name
+
+    class Meta:
+        verbose_name = _('Material category')
+        verbose_name_plural = _('Material categories')
+
+
 # Create your models here.
 class MaterialPart(models.Model):
     """
@@ -20,6 +34,8 @@ class MaterialPart(models.Model):
     buy_date = models.DateField(_('purchase date'), editable=True)
     lifetime = models.DecimalField(_('lifetime (years)'), decimal_places=0, max_digits=3)
     photo = models.ImageField(_('photo'), upload_to='images', blank=True)
+    material_cat = models.ManyToManyField(MaterialCategory, default=None,
+                                          verbose_name=_('Material category'))
 
     def __str__(self):
         """String representation"""