Soft MaterialMade of high quality polyester, which is soft and harmless to your pet"s skin. which is very comfortable and soft for your pets.Perfect Size35cm 13.8inch Length, 0.5cm 0.2inch Width, suitable for pets aged 4 to 6 weeks with a head circumference of less than 10.5cm.Adjustable DesignThere is an adjustable hook and loop design to accommodate each pet"s size. Put them on the neck of your newborn puppies, so you can identify them by the color of the collar which is very bright. Puppy ID can fit most pet sizes. Suitable for puppies, kittens and other small animals, making it easy for you to keep track of your pet.Package IncludesYou will receive 12 puppy collars in assorted colors: red, orange, pink, yellow, dark blue , light blue, green, fluorescent green, black, gray, brown, purple, enough to meet your needs.Number of pieces delivered: 12About Shipping: All items will be shipped within 3 business days after the payment is received. Most times you will receive them within 8-12 days then. The specific delivery time is depend on circumstances.Any questions, please feel free to contact usDuring the shopping process, if you have any questions, please feel free to consult us, we will reply you within 24 hours, wish you a happy shoppingThanks for your cooperation and we'll make you feel satisfied.