Aircee Adjustable Pet Puppy Whelping ID Collars Litter Bands 12pcs Set Pet Puppy Whelping ID Collars 12pcs Set Identify pups and kittens. Soft fabric self fastening. Washable and Colorfast. Size:10x200mm (2.9x7.87''),10x300mm (2.9x11.8''),10x350mm (2.9x13.78''),10x400mm (2.9x15.75'').