Rich Colors-15 colors are enough to meet your needs. And these coloured puppy collars are very suitable for your adorable pets. Double-faced Fluff--This puppy whelping collar is made of double-faced fleece, delicate and soft, and will not scratch pet skin during use. Adjustable-The growth rate of the pet is very fast, please adjust the tightness of the puppy collar at any time according to the growth of the pet. Large Size-This puppy ID collar is 13.78in long and suitable for pets up to 3 months old. If you think it is longer, you can cut it to the length you want. Note-When using the puppy collars, please stay away from your clothes to prevent the thorns on the ring from scratching your clothes.