In this purchase you will receive 12 whelping collars. These can be sized from about 1.5 to 3 inches in diameter, as shown in the photos. Not all of the collars will be exact in sizing, as they are custom handmade items. I have tried to make them as close in size as possible. The colors that will be included in this purchase are 1 of each color as follows - Royal Blue, Black, Red, Purple, Neon Green, Neon Orange, Neon Yellow, Neon Pink, Ocean Blue, Gold, White and Kelly Green as shown in the photo. These Whelping collars are made for Toy breeds and other smaller animals ranging in the same size. I have made them to fit from newborn to a 6 month old puppy, I was able to fit it on my 2 year old tiny Yorkie. So they should fit from whelping to departure date, they will be perfect for teeny tiny puppies or kittens as well. I do not make these in any other sizes, but for toy breeds or other small animals. So be sure of the sizing before you purchase as I do not accept returns. Due to these being Custom made items.