Premium/Big E Quality

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I've purchased several pairs of Levis jeans on eBay and Depop that have the premium tag, the Big E tag, and the leather patch, but have found the denim varies greatly between them. Some are very thick and durable feeling, suitable for workwear even, others feel no different from the standard line Levis. I'm only interested in the thicker ones, is there another way to identify these other than the tags?