MICRO-LINED - Our vacuum bags have a 2-ply micro filtration system that is 99.7% efficient down to 5.0 microns and can capture particles as small as 0.1 microns. Ideal for Allergy sufferers! QUALITY DESIGN - These bags fit Hoover Windtunnel bagged upright and Tempo upright models that use Type Y bags. PERFECT FIT Compare to Hoover 4010100Y, AH10040, Style Y manufacturer part numbers. Fits just like the OEM bag! GREAT VALUE - Receive 18 replacement bags! About us: YourSecondShop We sell a variety of products in new, used or open box conditions. We attempt to describe every item as accurately as possible - We try to avoid surprises and give you the best possible shopping experience. ? Questions - Requests We are here for you, if you have any questions or requests, please do not hesitate to ask. We strive to answer all questions and requests as quickly as possible. ? Handling Time: We ship out Monday - Friday - Orders placed before 9AM will usually ship out that very day. ? Shipping: Very often we have the USPS Parcel selection as the chosen shipping method - we try to avoid that method at all costs - we usually have that selection to give us the most flexibility for us to chose either USPS Priority, FEDEX or UPS - all those options are are never longer than Parcel Select. Is your location excluded? Want your item shipped with a certain carrier? Just ask us - there's a good chance we can accommodate your request. ??? Returns: Products are returnable as long as the listing says returns accepted. Returns are free if the product is damaged, or not as described. ? Feedback: We of course only want positive feedback - so before you post anything negative please try working it out with us. We are here to give you the most wonderful shopping experience! YourSecondShop