We are delighted to be able to offfer this great Akela product. They are exactly as it says on the pack, pure, ethically sourced beef tripe compressed into a bone. They have all the digestive and tooth cleaning benefits of tripe pressed into a more substantial chew for the dogs, Akela are 5 star rated by Which Dog Food which gives us confidence to sell their products as we only want the very best for ours and our customers' dogs. These bones are about 4" long and are a good size for our powerful chewing, medium sized dogs. They come in packs of 5 and are much less stinky than normal tripe!