Hoover C2401-010 Shoulder Vac Pro Commercial Back Pack Vacuum with 1-1/4-Inch Attachment Kit 8.5 amp motor provides stronger suction Clear dome lid lets you see exactly what is captured Shoulder straps are secured by a chiropractor-designed harness Can be used with a shake out cloth liner or a disposable paper bag insert HEPA filter captures up to 99.97% of particles up to 0.3 microns in size