Our Bully Sticks are 100% Natural, Australian, Dried, Single Ingredient, Chemical Free. Each Bully Stick is approx 12cm in length & are thick, as opposed to thin. These treats are great as a long lasting chew & suitable for dogs who love to chew! For example, my Labrador only takes 60 seconds to devour a pigs ear, but with these Bully Sticks she will get at least 10 minutes out of just one. This may not sound like long to you, but if you have a big chewer, you will know that this is a long time! For smaller dogs, these are still great and they will obviously get much longer out of a bully stick than a large dog. Store in a cool dry place & they will keep for months.