ID Collars Package: Contains 15 pieces with adjustable length, allowing you to adjust the fit as puppies grow. High quality: The puppy identification collars are made from nylon and polyester, designed with hook and loop closure. Both sides of the ID collars feature a soft velvet layer, providing comfort for your pets. Easy to use: The identification collars feature an adjustable hook and loop design, suitable for various pet sizes. Simply place the collar around the puppy's neck and adjust to the desired fit. Use collar colors to help identify individual pets. Identify newborn pets: Assorted color collar bands make it easy to track and distinguish puppies. Suitable for multiple pets: These ID collars are ideal for puppies and kittens from birth up to 8 weeks old, available in a variety of colors.