Solstice Soft Velcro Whelping ID Collars, Pack of 12 (Assorted Colors), Adjustable & Reusable - Great for Identifying Puppies, Kittens, and Other Small Animals Made of soft cotton velcro. Each collar is easily adjustable and provides bright, clear color identification. Provides a secure, comfortable fit for your pet. No buckles, ties, or tags, simply wrap around and secure the velcro. A great tool for breeders or farmers to easily identify animals. Track names, medications, vaccinations, or a new owner by writing on collar with a marker. Each collar is washable and reusable for future litters. Colors won't Fade. Collars fit puppies, kittens, and other small animals.