I ordered the 2XL (size 9) because they were out of (regular??) Size 9. The inside is stamped "Size 9" so I don't understand the difference. I ordered these again to replace ones that were getting old & worn out. They fit just fine. Despite what the instructions say, I wash mine in cold water & dry them on a rack. Since they are 100% cotton, I would think they would shrink if I followed the instructions & washed them in warm water then tumbled dry. So maybe order a size bigger?