I have been using a beaded seat cover in the summer for a couple seasons now. Every summer I have trouble adjusting to the first few 85+ degree days. The seat covers aren't enough in this case so I went a step further and put a portable misting system together. It consists of a plastic coffee can with a windshield washer pump mounted thru a grommet pushing water thru tubing to an aerosol can spray nozzle. I plug it into the cig lighter and use a momentary push button to engage the pump. On the really hot days I put ice in the water too

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