Genuine Panasonic Style U10 (U-10) upright allergen vacuum cleaner bags. These bags are designed to fit the new Panasonic Opti-flow uprights, but also can be used in all Panasonic upright models. With a Teflon inner liner, these bags are the best quality bags available for your Panasonic upright, capturing 99.97% of all airborne allergens down to .3 microns. These bags are a must for allergy and asthma sufferers. 2 Bags per package. Genuine Panasonic part number MC-V160HT.