The puppy whelping collars provide great solution to identify your pups without effort. The knitting fabric gives more gentle care to the tender skin. It's non-itchy and more comfortable than the single-sided id bands for the pet to wear. Features -Color:Multi -Material:Knitting wool -Size(S):23.00X1.00X0.10cm/9.04X0.39X0.04in -Note:Suitable for new born cat or dag. - You don't need to worry about your newborn pets' skin will be scratched by the identification collars. - The growth rate of the newborn pets is very fast, can adjust the tightness of the whelp identification collars in line with the newborn pet's growth rate. - If the length of the collar is too long, you can adjust it to the length you need. - Good instruments for you to keep track and identify your newborn pet easily. - You can take care of the newborn pets conveniently, suitable for personal use or pet shop use. Package list: 1 x Set Pet Collar