... water as coolant, then pumped the coolant throughout tube vest which end user will wear, absorbing ... Navy, Police, Medical, Motorcycle Driver, Racing Driver. Tube VestDescriptionTube Vest is designed to circulate chilled water or liquid ... °F-4 ~ 140Unit Weightkg2.8NoisedB(A)70 Tube VestMaterialOuter MaterialCotton/LycraLinerMeshSmall TubePVCLarge TubeTPUZipperPlasticWater Flow500ml/minTube DesignFour ...