Size Churt
| Size | Neck | Chest | Back Length | Example Breeds |
| XXS | 15–20 cm (6–8 in) | 25–30 cm (10–12 in) | 20–25 cm (8–10 in) | Teacup Chihuahua, Toy Poodle |
| XS | 20–25 cm (8–10 in) | 30–35 cm (12–14 in) | 25–30 cm (10–12 in) | Pomeranian, Yorkshire Terrier |
| S | 25–30 cm (10–12 in) | 35–45 cm (14–18 in) | 30–35 cm (12–14 in) | Dachshund, Shih Tzu |
| M | 30–35 cm (12–14 in) | 45–55 cm (18–22 in) | 35–40 cm (14–16 in) | French Bulldog, Cocker Spaniel |
| L | 35–40 cm (14–16 in) | 55–65 cm (22–26 in) | 40–45 cm (16–18 in) | Beagle, Border Collie |
| XL | 40–45 cm (16–18 in) | 65–75 cm (26–30 in) | 45–55 cm (18–22 in) | Golden Retriever, Labrador |
| XXL | 45–55 cm (18–22 in) | 75–90 cm (30–36 in) | 55–70 cm (22–28 in) | German Shepherd, Great Dane |
| XXXL | 55–65 cm (22–26 in) | 90–110 cm (36–43 in) | 70–80 cm (28–31 in) | Mastiff, Saint Bernard |