These bright LED harness is perfect for the late night strolls. You can select from seven different colors or select a disco mode for a variety of colors. 

Sizing:

Small harness neck adjusts from 12-20 inches. Girth 16-29 inches.

Medium harness neck adjusts from 15-24 inches. Girth 21-38 inches. 

Large harness neck adjusts from 19-27 inches. Girth 26-47 inches.