Mr. Peanut's PurrTrek Harness has been designed in 2 sizes to fit every cat - Extra Small & Small Sizes. See sizing chart for details. * XS Cat Harness with Leash Set - Measuring Neck Girth: 8.5" - 11.0", Chest Girth: 13.5" - 16.0" * Small Cat Harness with Leash Set - Measuring Neck Girth: 11.0" - 13.7", Chest Girth: 18.0" - 20.0" (Tip: Your cat's head circumference should be at least 10 inches or your cat may slip out). Please measure your cat carefully and refer to the size chart before ordering. * Package includes: 1x Plush Vest and 1x Nylon Walking Leash (59" - 150cm) * Ultra Comfortable - Keep your pet cozy during cold days or those brisk mornings. Extra-soft 3 layer inner lining and plush wrapping make every walk comfortable. And the outer twilled corduroy makes your cat stand out and also keep warm. * Reflective No Choke Design - The harness vest design protects the neck of your cat against the pull of a leash and collar. The reflective strips make it easy to see your pet in the dark. * Escape-Proof & Fully Adjustable - This plush harness features 4 adjusting straps that allow the right fit for your cat so that they cannot slip out easily. Both sides have a sturdy safety buckle for a more secured closure. * Easy to Wear - This hassle-free overhead harness is easy to put on and take off with its 2 fast-release buckles. Slide the harness over your cat's head, buckle it up, then adjust the straps. By connecting the leash to its metal D-Ring, your cat is ready for outdoor adventures.