XXS: The length of the headband is 5.5cm, the height from the head to the body is 5cm, the length of the elastic rubber band is 137cm, and the diameter is 1.5mm. The length of the nylon rope is 47cm, the width is 1cm, and the total length of the rope is 184cm. It is suitable for a parrot body size 75-110g XS: The length of the headband is 5.5cm, the height from the head to the body is 5cm, and it is suitable for a bust of 42cm or less. The total length of the traction rope is 120cm. It is suitable for the size of the parrot about 75-100g. S: The length of the pullover is 6.5cm, and the height from the head to the body is 6.8cm, which is suitable for a bust of 47cm or less. The total length of the traction rope is 120cm. It is suitable for a parrot body size of about 110-190g. M: The length of the pullover is 7.5cm, the height from the head to the body is 8cm, and it is suitable for a bust of 51cm or less. The total length of the traction rope is 130cm. It is suitable for a parrot body size of about 190-420g. L: The length of the headband is 9cm, the height from the head to the body is 10cm, and it is suitable for a bust of 62cm or less. The total length of the traction rope is 130cm. It is suitable for a parrot body size of about 425-600g. XL: The length of the headband is 10.5cm, the height from the head to the body is 12.5cm, and it is suitable for a bust of 76cm or less. The total length of the traction rope is 130cm. It is suitable for a parrot body size of about 600-1000g. Product Attributes: Ordinary Material: Cloth