Dede's most common size is the SMALL.  TINY is actually quite TINY.  Large, Dede doesn't think you need, but you can use it as a way to give you space, but  LARGE AGGRESSIVE dogs need 2 people handling them in her opinion!  May come in different color and style, does not affect use.  ALL SALES FINAL
Best for tiny head chihuahuas and mini's and small yorkies. If you have a large aggressive dog, this is not going to help in my opinion. You NEED 2 people and training.
#7 tiny
#5 small (most used)