This is a Montbell synthetic fiber sleeping bag with high heat retention, suitable for temperatures down to -6°C. It has been used only once outdoors and has been carefully maintained, so it is in excellent condition. I would like to pass it on to someone who will take good care of it. - Model Name: Seamless Burrow Bag #2 - Comfort Temperature: 0°C / 31°F - Lower Limit Temperature: -6°C / 20°F Thank you for looking.