Buyer Beware: Poshmark does not stop sales of counterfeit products; no recourse for buyers! I ordered a set of two pillowcases listed as 100% silk and was hugely disappointed when the package arrived – on opening it, it was clear that the material used to make the pillowcases was not 100% silk, but instead cheesy acetate/polyester fabric. I immediately reached out to Poshmark, but they ruled in favor of the seller, even though I sent plenty of data showing that the items were counterfeit. This apparently happens A LOT in looking at other folks' reviews.