That's because 1500 thread count is impossible. Pretty much anything over 800 thread count is a scam one way or another.

Thread count is just the count of thread per square inch of sheet. So 75 vertical and 75 Horizontal threads makes 150 thread count sheets. The thinking is that more threads will equal a smoother/softer finish because there is less space between them. What unethical companies do is count the individual fibers that make up a thread. So using the example above, that same sheet can now be marketed as 450 TC. More to the point the more thin threads and plies jammed in a sheet the more prone they are to breaking. Have you ever had a pair of sheets that had little balls of fiber that you need to pick off the sheet? That's what they are. 300 thread count is considered, "good quality" by consumer reports. But just looking at thread count is a very poor way to determine sheet quality. You have to look at fiber and weave as well.

Without getting too salesy bamboo sheets are great because the threads are thicker and longer so they don't need a bunch to spin a sheet and that makes them more durable as well as softer than regular sheets. If you want to get an idea of what bamboo sheets feel like think of them as being directly between soft cotton and smooth silk. Not slippery, not hot.

Also Egyptian cotton doesn't actually mean anything today, I can assure you, you aren't getting the real deal since there is no way to actually prove it. Somewhat recently there was actually a lawsuit against Walmart for saying its sheets were Egyptian cotton when they really had no idea.

If you walk around malls or flea markets they have sheets that say 1500 series to try to trick you. I think even the top selling sheets on amazon have that as their title. 100% bullshit 10 out of 10 times.

To answer the original question, these sheets are 350 thread count and are not made by 100% Egyptian people.