Do these actually serve a purpose or are they just for looks? Cabela's has some down here in their bargain cave for 50% off. Do they actually do anything?
Yeah they keep the heat inside, I use one with Flash when I travel and do not take my dog truck with dog box. They work great - would you want to be in a kennel in the back of a truck in the winter for a 2-3 hour trip?
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