Our customary bed sheets are 100% cotton flannel, purchased from Lands End. They are sturdy, soft, and cosily warm during the colder months. But in summer, the weight and warmth are not always welcome. The American Blossom sheets give us the skin comfort of 100% cotton, while being light enough to barely register on our skin. Our sleep is cool and comfortable now. If I could change anything about the purchasing process, it would be to have the option of choosing the pillowcase size separately from the sheets. We have a king size bed, but do not use king size pillows. For now, the extra length of the pillowcases is tucked inside, where it stays quite nicely.