SIZING - Please measure your pet chest accurately and refer to left size chart before buying You may need to order a size bigger if your pet's size is at between. Can fit for all cats and most small dogs, Suitable for Chihuahua, Miniature Poodle, Maltese, Terrier, Yorkie, Mini dachshund and similar small sized dog breeds. A matching dog leash is included, Leash length :120cm/4ft, EXCELLENT QUALITY - Ultra soft and highly durable Eco-Friendly straps, Light-weight Soft breathable air-mesh,100% polyester material. ROSH tested, Non-Toxic REFLECTIVE DESIGN - Reflective cat or dog harness strip design makes it visible in low light conditions, Improves safety when walking at night. ADJUSTABLE - Adjustable strap quick snap clip, Double stitched around a reinforced anchor hook, sturdy O/D-Ring for leash attachment and Non-Breakaway emergency release clasps for extra pet protection when jogging, running, or hiking PROTECTION - Innovative No-Choke design protects pet's fragile trachea and throat no more pulling, tugging or choking for your dogs X-Small - Chest Girth 26cm/10.2inch, Fit weight up to 1.5kg/3lbs. Leash length :120cm/4ft, width:1.5cm/0.6inch Small - Chest Girth 36cm/14.2inch, Fit weight up to 1.5- 2.5kg/3-5.5lbs. Leash length :120cm/4ft, width:1.5cm/0.6inch Medium - Chest Girth 40cm/15.7inch, Fit weight up to 3-4.5kg/6.5-10lbs. Leash length :120cm/4ft, width:1.5cm/0.6inch Large - Chest Girth 46cm/18.1inch, Fit weight up 5-7kg/11- 15.4lbs. Leash length :120cm/4ft, width:1.5cm/0.6inch X-Large Chest Girth 55cm/21.7inch, Fit weight up 7.5-10kg/16.5-22lbs. Leash length :120cm/4ft, width:1.5cm/0.6inch Package content 1*vest harness +1*Nylon Leash