All these years I've been buying only cotton pillowcases with plain colors. Silk pillowcases seemed expensive and I didn't know why I would spend the extra money. These pillowcases at the cotton and silk store came with good educational materials and a reason for my to buy and try. Although not that much more expensive than a reasonable cotton pillowcase, these silk pillowcases made a lot of difference. Especially in terms of feeling hot or cold in the head and neck areas. Smooth to the feel these made sleeping at night pleasant as rightly noted in the description. I love the color choices and sizes. The packaging is also very elegant made with recycled materials which I appreciate. I highly recommend you give these a try and you'll not regret.