The Red Dingo Elegant Collars are not only a fashion statement but are made from high quality cruelty-free artificial leather. Good for your look and your conscience! Collars are available in six sizes and feature Stylish hardware and double layering for extra padding. Sizes: XS - Adjustable Length 8”-10” Width 1/2” (12mm) S - Adjustable Length 9 1/2”–12” Width 5/8” (15mm) S/M - Adjustable Length 11”–14” Width 4/5” (20mm) M - Adjustable Length 13”–16 1/2" Width 4/5” (20mm) M/L - Adjustable Length 16”–20” Width 1” (25mm) L - Adjustable Length 19”–23” Width 1” (25mm)