After purchasing and using this product for a a few weeks. I think these are PX PCs which are great. You would never know it has liner unless you actually see it, and even then I would argue it’s compliant because it is not intended to “change the PCs intended design and fit” because fit, and appearance is the same. This one keeps its shape, is a bit more moldable to get a better fit on head, and last but not least, has the liner to protect your hairstyle (whether braids for females, or waves for males.
Male
PC Size: 7 with shorter hair, 7 1/8 with hair slightly grown out.