The multifunctional pet collar can prevent pets from licking wounds after surgery or fighting. If not worn, they can also be used as pet pillows and pet decorations.Material: PP cotton fillingThe S size has a neck circumference of 9-18cm, an inner diameter of 5cm, and an outer diameter of 22cm.Suitable for pets weighing less than 3 kgThe M size has a neck circumference of 12-25 cm, an inner diameter of 7 cm, and an outer diameter of 25 cm. Suitable for pets weighing 3-6 kg.The neck circumference of the L size is 15-31 cm, the inner diameter is 10 cm, and the outer diameter is 30 cm. Suitable for pets weighing 6-9 kg.The XL size has a neck circumference of 19-36 cm, an inner diameter of 12 cm, and an outer diameter of 34 cm. Suitable for pets weighing 9 to 14 kg.