A safety harness (brake harness, greyhound harness) that prevents the dog from escaping. S size: neck circumference 27-40 cm chest circumference 31-50 cm brake part: 28-46 cm harness length 16.5-24 cm M size: neck circumference 38-58 cm chest circumference 44-74 cm brake part: 38-60 cm harness length 20-32 cm L sizeneck circumference: 54-86 cm chest circumference 58-102 cm brake part 51-86 cm harness length 23-39 cm