Sleeping well depends on a delicate balance: a stable temperature, controlled moisture levels and a gentle, comfortable touch against the skin. The fabric of your pyjamas directly influences all three factors. The right fabric helps your body maintain its natural temperature throughout the night. The wrong one can trap heat, retain moisture or create a heavy, uncomfortable feeling that disrupts deep sleep phases. Thermoregulation: how your body manages heat while you sleep During sleep, the body lowers its core temperature to initiate and maintain rest. For this process to work correctly, the fabric must: • Allow air circulation •