Leather. It's luxurious, wears well, looks good, and for the fashionable pooch, it's the only way to go. It is important to use identification tags in addition to the chips or tattoo your dog may already have, especially if your pup's an escape artist. It's probably preferable for you and your neighbors that they have the ability to just call the number provided on the tag should they find the little rascal. WARNING When securing your pet outdoors, do not use with a tie out. Owners are encouraged to regularly check the tightness of their pets' collars. Six colors blue, hunter, pink, brown, green, camel available in three sizes small 58 X 10 16, medium 34 X 14 20, large 1 X 18 26. Note Check the drop down menu above for sizes available online. Made in China.