The silk sleeping bag liner offers exceptional lightweight and breathability. It serves as a standalone option or can be used alongside a sleeping bag to enhance warmth. Whether it's cold or hot, this liner aids in temperature control, keeping you comfortably warm in chillier conditions or pleasantly cool when it's warmer. Additionally, silk's natural properties assist in regulating body temperature and moisture, promoting a comfortable sleep environment. Lifeventure Silk Sleeping Bag Liner - Mummy