My daughter has a yorkie. When it gets cold, he is cold all the time. When it is hot, he is miserable. I make him little vests with fleece on the inside and cotton on top, for the winter. Well I decided to make him one for cooling. I only used cotton, and then added pellets inside. I figured if it worked to make neck coolers for us, it would work in his vest. You soak the vest in water for a few moments and the pellets expand. I used superman fabric and put a little red cape on in.
Did not have him here to model it. I put it on my cat. I don't think she was very happy.