Don't feel that you have to stick to the materials on this list. I just finished testing the Naturalmat Organic Hemp Bed Linen Collection, and I can't stop talking about this miracle material. Hemp combines all the best bits of linen, in terms of breathability and durability, and it's that little bit softer to suit sensitive sleepers. If you're looking for something more luxurious, the Shleep Luxury Merino Wool bedding set could be right up your street.
Caring for your linen bed sheets is also easy. Wash them in cold water with mild detergent and tumble low dry. If you plan on ironing them, a good tip is to take them out of the dryer when they are slightly damp and iron on low heat.
Thread count is another important factor to consider when choosing flannel sheets. While the higher the thread count of regular cotton sheets, the better the quality, with flannel sheets, this is less important. Instead, focus on the fabric weight and overall feel of your bed sheets to gauge their quality.