I've been going shopping for shirts/jeans for 30 years now, and when I see something I like I always pinch it between my fingers to check the fabric. Had a fab

I've been going shopping for shirts/jeans for 30 years now, and when I see something I like I always pinch it between my fingers to check the fabric. Had a fabulous 100% cotton Polo RL shirt that lasted me 10 years until creases around cuffs and the collar literally disintegrated. Went to the same section just last month and the most expensive, fancy shirt there was as thin as rice paper. You could see through it! I'm not sure what to do. It might be time to switch to an online source, but then I can't "pinch the fabric" as easily - have to return what I don't like. Wish there was a source with fabric specs, but I have little hope. As it is you can barely get the manufacturers to fess up the material blend, hiding it in between a bunch of other tags in fine print or in weird spots.