1 1/2" Martingale Dog collar! Red The windmill Pattern. Greyhound. 13"-18" /12"-16" Handmade martingale dog collar 1 1/2 inch width. Red The windmill Pattern Collar: Unique cotton fabric pattern, strong polypro webbing in the middle, soft velvet lined. Lead: Strong Polypro webbing in the middle,Wapped in unique cotton fabric. Made with top quality hardware.