We love http://www.k9collars.com/. Many colors to chose from. Break-away collars. They will embroider name/address/phone number on them for you (we just have our phone number). The ones we get have bells, but I always remove them 'cuz the kitties hate them. I ordered extra (in case our family expands ) or some get lost. Pepper has managed to release her twice now, but I just put it back on her.