ROGZ Utility Small 3/8-Inch Reflective Nitelife Dog Collar Small Reflective Red Dog Collar: 3/8" wide, Adjusts 8-13" Matching Leash and Harnesses are available Available in Black, Blue, Red, Orange, Purple, Turquoise, Yellow, Chocolate, Pink and Lime Green The 3/8-inch nitelife collar adjusts for a neck size of 8-inch to 13-inch; it's suitable for miniature poodle, yorkie and similar sized breeds