I like the feel of this pillow case by #softsilker but I am not convinced that it is #100percentmulberrysilk. There is not any tag on the pillow case that indicates what it is made of or with care instructions. What I have read about #mulberrysilk it is pure white in color…which this pillow case is more of a creamy white. It is suppose to be the finest available in the world. The pillow case feels nice but I am not so sure it “is the finest in the world “. It is cool to the touch and felt nice to sleep on. Mulberry Silk is 100% natural, odorless and hypoallergenic. I did not notice any order to mine but I did see other reviewers had a problem with odor. Disappointed that there was only one pillow case since a queen/king bed have more than one pillow. The zipper works well and there are no loose threads. Will have to see how it holds up over time…I received this product free. All my reviews are based on my own experience and evaluation of the product so that others can benefit in finding quality products that meet their needs & expectations.