12 Colors Identification ID Collars Bands Whelp Puppy Kitten Dog Pet CatSpecifications:Material:Nylon+Double Velvet These are used to identify puppies Soft collars with easy snap feature Would unsnap incase of emergency The different colours can also make puppy\/kitten selection Easy to keep track of each puppy or cat weight gain their develop, to check food consumption in feeding time, and management health and behaviours. Make sure to check the collar under the daily wear, is too loose or too tight (about 2 refers to the space around)All dimensions are measured by hand, there may be 2-3cm deviations,thanks for your understandingAs different computers display colors differently, the color of the actual item may vary slightly from the above images, thanks for your understanding. Size: S- 10*200MM long for newborn to 2 weeks of pet use Package Include: 1 Pack Puppy ID Collar(12pcs)