Jackets & Jammies are a must for even our "warm" Southern California climate. If you're cold...they'll be cold...that's our motto.
A quick "relief" walk (10-15 minutes) is fine without a jacket, but if you're going to be out for a bit, remember that your greyhound doesn't have the fat or fur to give them the warmth they want or need.
One of our friends at Adopt-a-Star is Gayle Fink. She makes custom jackets and jammies. Give Gayle a call at 760-931-9989 or email email@example.com. Make sure that you let her know your coming from the Adopt-a-Star site and she'll talk to you about making the perfect jacket or jammie for your greyhound.