What is the thread count
TC=Lol!
There is no thread count, they aren’t cotton.
Other fibers than cotton can have a thread count but I agree it tell you a lot less about the sheets. Artificial fibers like this will typically have a high thread count.
The only good thing I can think of about the “side pockets” is you will know the orientation of the sheets right away when you are making the bed. Oh, an you know where to find the lint.
Microfibre sheets don’t get listed by thread count because it’s irrelevant to the material. In my experience, microfibre sheets are very lightweight and a bit thin. They can feel pretty nice, though, very smooth.
Anyone tried these, know if the fitted can actually can fit a mattress up to 18"? Usually if you even get within 3 or 4 inches of their thickness claims, making the bed is like stretching a drum and you’re constantly dealing with it coming off. Especially when you do lots of athletic things on it.
Like badminton.
Also Bedminton. 
Can’t answer your question on them fitting the mattress thickness, but your thoughts of doing a lot of athletics on them made me wonder if Kathy Ireland comes with a set. It’s not real specific on that point it just says her sheets. If so I’m in for a set.
So are pockets on both sides?
Maybe it just me, but do your remotes magically end up between the mattress and the footboard? 
Per the features…
Two 8" Deep pockets are attached to both sides of the fitted sheet
RTFM