SET Size Chart for Small to Medium Breeds:

Size S comes with a collar in size S, a harness in size S, and a matching leash.
The collar fits on a neck of 35 to 42.5 cm (13.8 - 16.7 inch). The harness fits a chest girth of 40 up to 73 cm (15.7 - 28.7 inch) and a lower neck circumference of 25 to 48 cm (9.8 - 18.9 inch).

Size M comes with a collar in size M, a harness in size M, and a matching leash.
The collar fits on a neck of 42.5 to 50 cm (16.7 - 19.7 inch). The harness fits a chest girth of 50 up to 75 cm (19.7 - 29.5 inch) and a lower neck circumference of 35 to 58 cm (13.8 - 22.8 inch).

Size L comes with a collar in size L, a harness in size L, and a matching leash.
The collar fits on a neck of 50 to 57.5 cm (19.7 - 22.6 inch). The harness fits a chest girth of 60 up to 115 cm (23.6 - 45.3 inch) and a lower neck circumference of 43 to 63.5 cm (17 - 25 inch).

Size XL comes with a collar in size XL, a harness in size XL, and a matching leash.
The collar fits on a neck of 57.5 to 65 cm (22.6 - 25.6 inch). The harness fits a chest girth of 95 up to 145 cm (37.4 - 57 inch) and a lower neck circumference of 53 to 83.5 cm (21 - 33 inch).

Important: Please measure your dog accurately before placing an order. Ensure there’s a two-finger gap for a comfortable and secure fit.