Prized for its warmth, flannel is primarily popular as a winter material. You can assess how thick and heavy a flannel sheet is by the GSM, or grams per square meter. A GSM of 130 to 135 is considered lightweight, 140 to 150 is considered midweight, and 160 or more is considered heavyweight. 

Cotton thread count - Thread count is the measurement used in cotton materials. It refers to the number of threads woven together per square inch of material. The more threads woven together means a higher thread count. The right thread count can make a difference to the smoothness, quality and feel of your sheets.

'Bamboo has similar benefits to sateen,' says Bed, Bath & Beyond. 'It provides a silky smooth sensation and tends to be cooler to the touch than cotton. However, bamboo tends to be more expensive and requires more careful cleaning.'

When we think of bed we tend to associate it with comfort. Sleeping on a mattress with clean, crisp, bed sheets, a soft, cosy duvet, and a sumptuous pillow has to be one of today’s simple pleasures. However, this was not always the case. The earliest human beings slept on the cold, hard floor using leaves and straw as a base. Instead of duvet covers or quilts, they used animal furs for warmth.