How do you know you're never received a counterfeit item? Many counterfeits you probably can't tell are counterfeit unless you have the real item already and do

How do you know you're never received a counterfeit item? Many counterfeits you probably can't tell are counterfeit unless you have the real item already and do a side-by-side comparison. For example, would you be able to tell if you got a counterfeit tumbler?: https://youtu.be/WvaTA0K_DZs https://youtu.be/WvaTA0K_DZs https://youtu.be/8B12EfGArME https://youtu.be/8B12EfGArME https://youtu.be/OfDZZPHByG8 https://youtu.be/OfDZZPHByG8 Counterfeits might not last as long as the real thing or, worse, they might but unsafe. I think I got counterfeit wallet a couple years ago, but I just suspected it of being not built to last, not counterfeit, until I read something on HN last week about Washington State making Amazon get rid of toxic school supplies. I was inspired to look up the wallet again and I found an extremely similar if not exactly the same wallet from a reputable brand but the one I bought was unbranded. I only knew the brand was reputable because I bought something from them before. I'm going to order a new wallet... straight from their site.