I would like to share with your readers about this cooling jacket I purchased at one of the street carnivals last summer. It's made by a company called A Touch of Love. My dog never got over-heated since I bought it for her. I just take it in our lunch cooler when we go out, and I just put it on her when she is hot, works great for preventing heatstroke. I also use it on her during cold winter days too, those gel packs can be heated in the microwave. I can still turn down the heat a bit while we are all out.