Essential for all breeders, these brightly coloured puppy id collars make identifying puppies in the litter simple. These unique collars, made from velcro, are infinitely adjustable and are designed to grow with the puppies from birth up to at least 8 weeks. (neck size 2.75"-13"/ 7cm - 33cm) Pack contains 12 individual collars 10mm x 35cm, one size fits all breeds. 4Pups id collars are safe, non-toxic, colourfast, washable and reusable.  A must for all breeders!