These again are ok but that’s all they are. They are like something that you would buy in a money saving store, compared to the other double fitted sheet I got which was 200 thread count not an 800. 
That one had a good quality elastic Round the entire edge not a poor quality elastic round each corner like this one has! 
Again, I would not buy this product, I would prefer to have taken a lesser thread count and had a better product.