ProTeam benefits:

• More productivity. Backpacks were proven by the International Sanitary
  Supply Association (ISSA) to double the speed of cleaning versus standard
  upright vacuums.
• Better cleaning. Greater airflow and static lift at the tool head removed
  more soil from surfaces as demonstrated by extensive lab tests and field
  studies
• Better filtration. ProTeam trademarked its Four-level Filtration ™
  supported by a battery of independent studies demonstrating greater fine dust
  capture than typical machines.