Hamilton 3/8" x 10" Safety Cat Collar Snag-Proof Safety Break-Away Cat Collar Fashion Harnesses and Matching Leads Available for Comfortable Walks and Travel Appealing Pastels of Cream, Pink, Lavender and Light Blue in 3/8-inch Width Heart and Floral Patterns Accented with Pearls and Silver Bell When measuring pet's neck or chest to ensure proper and comfortable fit, add 2 inches. When measuring pet's neck or chest to ensure proper and comfortable fit, add 2 inches.