https://www.ebay.com/sch/i.html?_nkw=Allegro+Black+Vortex+Cooling+Vest+M+L&_sacat=0&_dmd=2

Allegro Black Vortex Cooling Vest,M/L

Regular price
$172.00
Sale price
$115.00

Cooling Vest, Workwear Cooling Technology Vortex Tube, Workwear Material Properties None, Workwear Closure Type Hook-and-Loop, M/L, Polyester, Black, Fits Chest Size 40 In. to 50 In, Length 26-1/2 In, Requires Hose, Pump, Includes Vortex Cooling Tube