Original RPCM® Cool Vest - Tan Khaki- -Includes RPCM® Cool Pack Set. Original RPCM® Cool Vests feature over the shoulder and side strap adjustability. Additionally they include a heavy duty front zipper for easy on / off wear. RPCM® Cool Vests provide the user with the maximum comfort available in the market today. They maintain a cool, constant 59°F temperature for up to 2 1/2 hours, weigh less than 5 lbs., and recharge in minutes.