I've initially ordered the Thin Memory Foam pillow but found it to be too thick for my preferences (felt like a standard sized pillow), so I requested an exchange after 2 days of trial, and they promptly accepted without any issues. I chose the Ultra Thin Cooling Gel Memory Foam pillow this time as I was feeling a bit stuffy with plain one.
Coming to this pillow, it looked a bit too thin when I first opened the package and it had a flat base unlike the previous pillow. It didn't expand very much and the base stayed flat, but upon usage it seemed sufficiently comfortable, though I'm not entirely convinced with the "cooling gel" aspect.
So, overall, happy with the purchase.