diff --git a/rowers/models.py b/rowers/models.py
index eebab17c..86e7dea6 100644
--- a/rowers/models.py
+++ b/rowers/models.py
@@ -49,6 +49,30 @@ database_url = 'mysql://{user}:{password}@{host}:{port}/{database_name}'.format(
 if settings.DEBUG or user=='':	    
     database_url = 'sqlite:///db.sqlite3'
 
+
+# model for Power Zone names
+class PowerZonesField(models.TextField):
+    __metaclass__ = models.SubfieldBase
+
+    def __init__(self, *args, **kwargs):
+        self.token = kwargs.pop('token',',')
+        super(PowerZonesField, self).__init__(*args, **kwargs)
+
+    def to_python(self, value):
+        if not value: return
+        if isinstance(value, list):
+            return value
+        return value.split(self.token)
+
+    def get_db_prep_value(self, value, connection, prepared=False):
+        if not value: return
+        assert(isinstance(value, list) or isinstance(value, tuple))
+        return self.token.join([unicode(s) for s in value])
+
+    def value_to_string(self, obj):
+        value = self._get_val_from_obj(obj)
+        return self.get_deb_prep_value(value)
+
 # For future Team functionality
 class Team(models.Model):
     name = models.CharField(max_length=150)
@@ -79,6 +103,8 @@ class Rower(models.Model):
     pw_at = models.IntegerField(default=160,verbose_name="AT Power")
     pw_tr = models.IntegerField(default=160,verbose_name="TR Power")
     pw_an = models.IntegerField(default=160,verbose_name="AN Power")
+
+    powerzones = PowerZonesField(default=['UT3','UT2','UT1','AT','TR','AN'])
     
     c2token = models.CharField(default='',max_length=200,blank=True,null=True)
     tokenexpirydate = models.DateTimeField(blank=True,null=True)