The Large CatBib is actually the original design. In the beginning, we were strongly encouraged to reduce the size or people would not buy it. The size was reduced until a balance between effectiveness and smaller size was achieved.
In 1998, I was so disgusted with my 3 cats catching birds, that I locked them inside. I made a promise to the birds I would not let them outdoors ever again. After 3 weeks of lockdown, we were all miserable. Cats and humans were very stressed and the house reeked of cat urine (from fights and spraying). I had to come up with a solution to the problem.
I was desperate. I thought if I could put a wall between the cat and the bird it was stalking that would stop the killing. My first prototype was a piece of my husband’s old leather boot. I attached it to the cat’s collar and let that one cat out. It worked! No birds killed for a week.
The poor cat was so uncomfortable with this stiff piece of leather on her collar that I began to search for a softer material that still worked. I ended up with neoprene as it is water proof, flexible, but has enough structure to act as a “wall” coming between the cat and the bird.