I bought 5 single duvet covers from Ali, but none of them had any duvet inserts or ties inside, and the seams weren't finished either. I only used 2 of them because I had to sew the ties myself, and some of them also pilled. The rest went into the donation bin.
This duvet cover has inner seams and four duvet ties at the corners. Although there are fewer than 8 domestically produced ones, it is still one of the better quality blankets I've bought so far. The set with pillow covers is also nice, and it doesn't include unnecessary layered bed sheets, which is great. The price was affordable so I bought it as a summer blanket. It doesn't feel rough like a single-layer refrigerator blanket and the fabric is soft. The pillow cover does not have a zipper, and the duvet cover has a zipper at the bottom. Thank you, seller.