water liquid cooling vest for sports outdoor activ (@lorezbaler)
This is a back pack cooling vest.
How to use is: Put ice into the back pack, then fill water into it, close the bag and zip the backpack, switch is on, then the cold water will circulate in the vest, you will fill cool in less than 5 seconds. It's good for motocycle, hiking, fishing, cooking or other outdoor sports. It will work around 4 hours for battery and the cooling water, it's enough for half a day.
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