Jockey has CHANGED the fabric composition for this product.  Same product, same name (Comfie Cotton Hipsters), same RN#, but different fabric.  I couldn't figure out what was different, so I looked at my older ones that I like, and what I discovered was that Jockey previously made these with a blend of cotton and polypropylene, and THESE ones are now made with cotton and nylon.  The difference is noticeable: these new cotton/nylon ones are thinner, cheaper-feeling, and will stretch out more; also the leg holes are tighter (even in the same size) and more binding.  I have sent them back and have emailed Jockey to request that they go back to the old fabric.  It is much sturdier and more comfortable.  (I suspect the newer fabric is less expensive to manufacture.)