As a woman who is getting older, and has night sweats, lives in Humid Louisiana, I always expected to find cool, soft bed linens. Was a little worried, but lived the fact these are pure mulberry silk fabrics. I ordered the mulberry silk bed linen from the site. Great!!! They are breathable fabric. So soft and they fit my king bed perfectly, and so so much cooler than any other bed linens I have bought. I love them so much.