Note: Your pet usually wears a size S, which does not mean that all sizes S will fit them. Please measure your dog's actual "chest" and "neck". , and select the size according to the size chart. The weight is indicative. THANKS. Size Chart: SIZE:S, CHEST:33-40cm, NECK: 18-24 cm, WEIGHT REF.: 3-4.5kgSIZE: L, CHEST: 44-49cm, NECK: 30-46 cm, WEIGHT REF.: 7.7-10kgSIZE:XL, CHEST: 47-56cm, NECK: 37-54 cm, WEIGHT REF.: 10-12.5kgHigh QualityMade of high quality and comfortable lightweight mesh fabric, durable nylon braid and belt. It is soft, comfortable, breathable and durable. No Pull & Easy Control: Our no-pull dog harness is specially designed with 2 zinc alloy D-rings on the back and front of the chest. After a safer dog walk. The front clip prevents your dog from pulling while walking and is ideal for training dogs or dogs with a tendency to pull. The back is very suitable for casual walks, jogging, hiking, etc. Reflective Training Kit: With reflective edges, your pet dogs and cats can be seen in low light conditions, improving walking safety at night. Moreover, it is equipped with a durable dog leash, which helps to train it to walk with you. Adjustable and easy to wear: This vest strap is very easy to wear and adjust. The adjustable design can ensure a better fit for your pet. Quick release buckle design, easy to put on and take off.