The TSPRO Airtag Dog Harness is a Durable, Reflective Vest-Style Harness with an Airtag Mount That Fits Dog Breeds Of all Sizes. It Features an adjustable, No-Pull Design for Easy Control and Training, Making It Perfect for Everyday Walks and Outdoor adventures. Features： 1.Airtag Holder: The Tspro Airtag Harness Includes a Protective Shell for Safe and Easy Tracking of Your Dog. 2. Tactical Vest Design: The Harness Features a Handle For Enhanced Control and Quick Response In Emergencies, Ensuring Pet Safety. 3. Reflective Material: The Reflective Leash Boosts Visibility at Night, Safeguarding Your Pet and aiding Owner Supervision. 4. adjustable and Durable: The adjustable Harness Fits Various Dog Sizes With Durable Material For Long-Lasting Use. 5. No Pull-Free Design: Minimizes Unnecessary Tugging During Walks and Training, Offering a Comfortable Experience and Protecting The Pet's Neck.  Size Details: Size 1: For Small Dogs, Neck Girth 8.2-14.4inches (21–37 cm), Chest Girth:14–16.8 inches (36–43 cm), Weight: 8.8-14.3 lbs (4–6.5 kg) Size 2: For Small Dogs,Neck Girth 10.9–16.4 inches (28.5–42 cm), Chest Girth:16.4–20.7 inches (42–53 cm), Weight:14.3-20.9 lbs (6.5–9.5 kg) Size 3: For Medium Dogs,Neck Girth 14.2–21.1 inches (36.5–54 cm), Chest Girth:21.1–25 inches (54–64 cm), Weight:22-44 lbs (10–20 kg) Size 4: For Medium Dogs,Neck Girth 16–23.4 inches (41–60 cm),Chest Girth:24.2–31.8 inches (62–81.5 cm), Weight:44-88 lbs (20–40 kg)  Suitable Breeds: Chihuahua|Maltese|Poodle|Pomeranian|Papillon|Bichon Frise|Miniature Schnauzer|american Cocker Spaniel|Boston Terrier|Beagle|Baigle|Welsh Corgi|Dachshund|Miniature Pinscher,|Labrador|Golden Retriever|German Shepherd|alaskan Malamute|afghan Hound, Etc.  Note: Size 1 and Size 2 are Suitable Only for Small Dogs with a Weight of 10 kg or less. Size 3 and Size 4 are Suitable Only for Medium Dogs with an adult Weight of 40 kg or less. Color Options: Orange, Green