Torando's Pac-Vac 6 (six-quart) and Pac-Vac 10 (ten-quart) "Aircomfort" backpack vacuum cleaners are called aircomfort machines for a reason: They have a harness made by Deuter, one of the world's foremost manufacturers of comfortable, easy-to-use, easy-to-wear harnesses. These patented harnesses allow air to escape from three sides between the machine and the user, helping to reduce wearer perspiration by up to 25 percent over normal closed-back systems. Workers stay cool and have increased ...This story is related to the following:Backpack Type Vacuum Cleaners