Sleeping with natural fibres, such as alpaca, bamboo and organic cotton, has long been known to give a better nights sleep, and now we know why. Natural fibres disperse moisture from the skin, providing an even warmth and body temperature. Studies have consistently confirmed that sleeping comfort is highly dependent upon the body achieving its own unique optimal temperature balance for a restful and revitalising nights sleep. If during the natural sleeping cycle, the body is too warm or too cold, the human body will either consciously or subconsciously adjust its position in bed, thereby causing a disruption to the natural sleep cycle. ErgoPouch sleeping bags are all highly breathable, keeping babies warm yet allowing them to keep a consistent body temperature and not overheat.