This is an amazing product and I recommend it! It fits perfectly on my head, and I have thin long hair. I haven’t slept with it yet, but it seems like it would stay on all night. There is no strange smell and the material seems like real silk. I appreciate that they include a square piece of fabric for testing. The seller also left a handwritten note, which was very cute! The product arrived much faster than the estimated delivery date. Overall, this was an amazing purchase and I would definitely buy another!