Review on DuoClean Pre Filters and Post Filters for Colorfullife XPSTFH380 by Andy Edwards

The product page for these filters lists the Shark UV850 as one of the compatible vacuums. These filters are not suitable for UV850. The original filters (dirty in the picture) have a different length than width. The Colorfullife filters are the same size on all four sides. These filters are the same thickness as the original filters so they might fit if they do indeed fit your vacuum cleaner, but they don't fit the UV850 and the seller doesn't need to say what it does.