XXS Size:
 Neck circumference from 13 cm to 23 cm
 Chest circumference from 35 cm to 42 cm

 XS Size:
 Neck circumference from 21 cm to 35 cm
 Chest circumference from 42 cm to 51 cm

 S Dimensions:
 Neck circumference from 25 cm to 39 cm
 Chest circumference from 52 cm to 63 cm

 M Dimensions:
 Neck circumference from 31 cm to 46 cm
 Chest circumference from 63 cm to 73 cm

 L Dimensions:
 Neck circumference from 40 cm to 57 cm
 Chest circumference from 73 cm to 85 cm